39424385 has 32 divisors (see below), whose sum is σ = 63528192. Its totient is φ = 22682880.

The previous prime is 39424381. The next prime is 39424387. The reversal of 39424385 is 58342493.

It is not a de Polignac number, because 39424385 - 2² = 39424381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39424381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1067 + ... + 8943.

It is an arithmetic number, because the mean of its divisors is an integer number (1985256).

Almost surely, 2^39424385 is an apocalyptic number.

39424385 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

39424385 is a deficient number, since it is larger than the sum of its proper divisors (24103807).

39424385 is a wasteful number, since it uses less digits than its factorization.

39424385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7913.

The product of its digits is 103680, while the sum is 38.

The square root of 39424385 is about 6278.8840569006. The cubic root of 39424385 is about 340.3467771017.

It can be divided in two parts, 39 and 424385, that added together give a palindrome (424424).

The spelling of 39424385 in words is "thirty-nine million, four hundred twenty-four thousand, three hundred eighty-five".