47399477 has 2 divisors, whose sum is σ = 47399478. Its totient is φ = 47399476.

The previous prime is 47399461. The next prime is 47399483. The reversal of 47399477 is 77499374.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32103556 + 15295921 = 5666^2 + 3911^2 .

It is a cyclic number.

It is not a de Polignac number, because 47399477 - 2⁴ = 47399461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47399497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23699738 + 23699739.

It is an arithmetic number, because the mean of its divisors is an integer number (23699739).

Almost surely, 2^47399477 is an apocalyptic number.

It is an amenable number.

47399477 is a deficient number, since it is larger than the sum of its proper divisors (1).

47399477 is an equidigital number, since it uses as much as digits as its factorization.

47399477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1333584, while the sum is 50.

The square root of 47399477 is about 6884.7278087082. The cubic root of 47399477 is about 361.9021667187.

It can be divided in two parts, 4739 and 9477, that multiplied together give a triangular number (44911503 = T₉₄₇₇).

The spelling of 47399477 in words is "forty-seven million, three hundred ninety-nine thousand, four hundred seventy-seven".