39505974 has 8 divisors (see below), whose sum is σ = 79011960. Its totient is φ = 13168656.

The previous prime is 39505969. The next prime is 39506023. The reversal of 39505974 is 47950593.

It is a sphenic number, since it is the product of 3 distinct primes.

39505974 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3292159 + ... + 3292170.

It is an arithmetic number, because the mean of its divisors is an integer number (9876495).

Almost surely, 2^39505974 is an apocalyptic number.

39505974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

39505974 is a wasteful number, since it uses less digits than its factorization.

39505974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6584334.

The product of its (nonzero) digits is 170100, while the sum is 42.

The square root of 39505974 is about 6285.3777929413. The cubic root of 39505974 is about 340.5813985545.

The spelling of 39505974 in words is "thirty-nine million, five hundred five thousand, nine hundred seventy-four".