39955974 has 32 divisors (see below), whose sum is σ = 84410880. Its totient is φ = 12573792.

The previous prime is 39955973. The next prime is 39955999. The reversal of 39955974 is 47955993.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39955973) 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 15 ways as a sum of consecutive naturals, for example, 52404 + ... + 53160.

It is an arithmetic number, because the mean of its divisors is an integer number (2637840).

Almost surely, 2^39955974 is an apocalyptic number.

39955974 is an abundant number, since it is smaller than the sum of its proper divisors (44454906).

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

39955974 is a wasteful number, since it uses less digits than its factorization.

39955974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244.

The product of its digits is 1530900, while the sum is 51.

The square root of 39955974 is about 6321.0738011828. The cubic root of 39955974 is about 341.8696709384.

The spelling of 39955974 in words is "thirty-nine million, nine hundred fifty-five thousand, nine hundred seventy-four".