338976981 has 56 divisors (see below), whose sum is σ = 585638144. Its totient is φ = 192106080.

The previous prime is 338976977. The next prime is 338976983. The reversal of 338976981 is 189679833.

It is not a de Polignac number, because 338976981 - 2² = 338976977 is a prime.

It is a super-2 number, since 2×338976981² = 229810787295748722, which contains 22 as substring.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338976983) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 923460 + ... + 923826.

It is an arithmetic number, because the mean of its divisors is an integer number (10457824).

Almost surely, 2^338976981 is an apocalyptic number.

It is an amenable number.

338976981 is a deficient number, since it is larger than the sum of its proper divisors (246661163).

338976981 is an equidigital number, since it uses as much as digits as its factorization.

338976981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 558 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 338976981 is about 18411.3275186772. The cubic root of 338976981 is about 697.2524824147.

The spelling of 338976981 in words is "three hundred thirty-eight million, nine hundred seventy-six thousand, nine hundred eighty-one".