56423399 has 2 divisors, whose sum is σ = 56423400. Its totient is φ = 56423398.

The previous prime is 56423387. The next prime is 56423401. The reversal of 56423399 is 99332465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56423399 - 2⁴ = 56423383 is a prime.

Together with 56423401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56423309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28211699 + 28211700.

It is an arithmetic number, because the mean of its divisors is an integer number (28211700).

Almost surely, 2^56423399 is an apocalyptic number.

56423399 is a deficient number, since it is larger than the sum of its proper divisors (1).

56423399 is an equidigital number, since it uses as much as digits as its factorization.

56423399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 41.

The square root of 56423399 is about 7511.5510382344. The cubic root of 56423399 is about 383.5480228178.

The spelling of 56423399 in words is "fifty-six million, four hundred twenty-three thousand, three hundred ninety-nine".