47390923 has 2 divisors, whose sum is σ = 47390924. Its totient is φ = 47390922.

The previous prime is 47390887. The next prime is 47390929. The reversal of 47390923 is 32909374.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47390923 - 2¹⁷ = 47259851 is a prime.

It is not a weakly prime, because it can be changed into another prime (47390929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23695461 + 23695462.

It is an arithmetic number, because the mean of its divisors is an integer number (23695462).

Almost surely, 2^47390923 is an apocalyptic number.

47390923 is a deficient number, since it is larger than the sum of its proper divisors (1).

47390923 is an equidigital number, since it uses as much as digits as its factorization.

47390923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 47390923 is about 6884.1065505990. The cubic root of 47390923 is about 361.8803950482.

The spelling of 47390923 in words is "forty-seven million, three hundred ninety thousand, nine hundred twenty-three".