338979870 has 64 divisors (see below), whose sum is σ = 908677440. Its totient is φ = 89921664.

The previous prime is 338979827. The next prime is 338979871. The reversal of 338979870 is 78979833.

It is a super-2 number, since 2×338979870² = 229814704530433800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338979871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50004 + ... + 56376.

It is an arithmetic number, because the mean of its divisors is an integer number (14198085).

Almost surely, 2^338979870 is an apocalyptic number.

338979870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 338979870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454338720).

338979870 is an abundant number, since it is smaller than the sum of its proper divisors (569697570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

338979870 is a wasteful number, since it uses less digits than its factorization.

338979870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6586 (or 6580 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 338979870 is about 18411.4059756446. The cubic root of 338979870 is about 697.2544632342.

The spelling of 338979870 in words is "three hundred thirty-eight million, nine hundred seventy-nine thousand, eight hundred seventy".