39924427 has 2 divisors, whose sum is σ = 39924428. Its totient is φ = 39924426.

The previous prime is 39924419. The next prime is 39924457. The reversal of 39924427 is 72442993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39924427 - 2³ = 39924419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39924427.

It is not a weakly prime, because it can be changed into another prime (39924407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19962213 + 19962214.

It is an arithmetic number, because the mean of its divisors is an integer number (19962214).

Almost surely, 2^39924427 is an apocalyptic number.

39924427 is a deficient number, since it is larger than the sum of its proper divisors (1).

39924427 is an equidigital number, since it uses as much as digits as its factorization.

39924427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 39924427 is about 6318.5779254513. The cubic root of 39924427 is about 341.7796735315.

The spelling of 39924427 in words is "thirty-nine million, nine hundred twenty-four thousand, four hundred twenty-seven".