39424947 has 8 divisors (see below), whose sum is σ = 52622544. Its totient is φ = 26255328.

The previous prime is 39424939. The next prime is 39424961. The reversal of 39424947 is 74942493.

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

It is not a de Polignac number, because 39424947 - 2³ = 39424939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39424899 and 39424908.

It is not an unprimeable number, because it can be changed into a prime (39474947) 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, 3448 + ... + 9525.

It is an arithmetic number, because the mean of its divisors is an integer number (6577818).

Almost surely, 2^39424947 is an apocalyptic number.

39424947 is a deficient number, since it is larger than the sum of its proper divisors (13197597).

39424947 is a wasteful number, since it uses less digits than its factorization.

39424947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13989.

The product of its digits is 217728, while the sum is 42.

The square root of 39424947 is about 6278.9288099165. The cubic root of 39424947 is about 340.3483943239.

The spelling of 39424947 in words is "thirty-nine million, four hundred twenty-four thousand, nine hundred forty-seven".