39404534 has 16 divisors (see below), whose sum is σ = 65708160. Its totient is φ = 17599680.

The previous prime is 39404513. The next prime is 39404539. The reversal of 39404534 is 43540493.

It is a self number, because there is not a number n which added to its sum of digits gives 39404534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39404539) 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, 23639 + ... + 25250.

It is an arithmetic number, because the mean of its divisors is an integer number (4106760).

Almost surely, 2^39404534 is an apocalyptic number.

39404534 is a deficient number, since it is larger than the sum of its proper divisors (26303626).

39404534 is a wasteful number, since it uses less digits than its factorization.

39404534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48935.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 39404534 is about 6277.3030833312. The cubic root of 39404534 is about 340.2896436113.

The spelling of 39404534 in words is "thirty-nine million, four hundred four thousand, five hundred thirty-four".