39408434 has 12 divisors (see below), whose sum is σ = 64010106. Its totient is φ = 18188352.

The previous prime is 39408427. The next prime is 39408437. The reversal of 39408434 is 43480493.

It can be written as a sum of positive squares in 3 ways, for example, as 13875625 + 25532809 = 3725^2 + 5053^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 39408394 and 39408403.

It is not an unprimeable number, because it can be changed into a prime (39408437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57959 + ... + 58634.

Almost surely, 2^39408434 is an apocalyptic number.

39408434 is a deficient number, since it is larger than the sum of its proper divisors (24601672).

39408434 is a wasteful number, since it uses less digits than its factorization.

39408434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116621 (or 116608 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 39408434 is about 6277.6137186036. The cubic root of 39408434 is about 340.3008697800.

The spelling of 39408434 in words is "thirty-nine million, four hundred eight thousand, four hundred thirty-four".