39910020 has 96 divisors (see below), whose sum is σ = 118272000. Its totient is φ = 10039680.

The previous prime is 39910009. The next prime is 39910021. The reversal of 39910020 is 2001993.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (39910021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79731 + ... + 80229.

It is an arithmetic number, because the mean of its divisors is an integer number (1232000).

Almost surely, 2^39910020 is an apocalyptic number.

39910020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39910020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59136000).

39910020 is an abundant number, since it is smaller than the sum of its proper divisors (78361980).

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

39910020 is a wasteful number, since it uses less digits than its factorization.

39910020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 39910020 is about 6317.4377717553. The cubic root of 39910020 is about 341.7385574151.

The spelling of 39910020 in words is "thirty-nine million, nine hundred ten thousand, twenty".