39407090 has 16 divisors (see below), whose sum is σ = 72272088. Its totient is φ = 15465216.

The previous prime is 39407089. The next prime is 39407099. The reversal of 39407090 is 9070493.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37466641 + 1940449 = 6121^2 + 1393^2 .

It is not an unprimeable number, because it can be changed into a prime (39407099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36647 + ... + 37706.

Almost surely, 2^39407090 is an apocalyptic number.

39407090 is a deficient number, since it is larger than the sum of its proper divisors (32864998).

39407090 is a wasteful number, since it uses less digits than its factorization.

39407090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74413.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 39407090 is about 6277.5066706456. The cubic root of 39407090 is about 340.2970011532.

The spelling of 39407090 in words is "thirty-nine million, four hundred seven thousand, ninety".