39309942 has 32 divisors (see below), whose sum is σ = 90365184. Its totient is φ = 11167200.

The previous prime is 39309937. The next prime is 39309943. The reversal of 39309942 is 24990393.

It is a self number, because there is not a number n which added to its sum of digits gives 39309942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39309943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5017 + ... + 10187.

It is an arithmetic number, because the mean of its divisors is an integer number (2823912).

Almost surely, 2^39309942 is an apocalyptic number.

39309942 is an abundant number, since it is smaller than the sum of its proper divisors (51055242).

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

39309942 is a wasteful number, since it uses less digits than its factorization.

39309942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5364.

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 39309942 is about 6269.7641103952. The cubic root of 39309942 is about 340.0171329313.

The spelling of 39309942 in words is "thirty-nine million, three hundred nine thousand, nine hundred forty-two".