909477479 has 2 divisors, whose sum is σ = 909477480. Its totient is φ = 909477478.

The previous prime is 909477469. The next prime is 909477493. The reversal of 909477479 is 974774909.

It is a weak prime.

It is an emirp because it is prime and its reverse (974774909) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 909477479 - 2⁴ = 909477463 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (909477409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454738739 + 454738740.

It is an arithmetic number, because the mean of its divisors is an integer number (454738740).

Almost surely, 2^909477479 is an apocalyptic number.

909477479 is a deficient number, since it is larger than the sum of its proper divisors (1).

909477479 is an equidigital number, since it uses as much as digits as its factorization.

909477479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000752, while the sum is 56.

The square root of 909477479 is about 30157.5443131565. The cubic root of 909477479 is about 968.8665966134.

The spelling of 909477479 in words is "nine hundred nine million, four hundred seventy-seven thousand, four hundred seventy-nine".