90472799 has 2 divisors, whose sum is σ = 90472800. Its totient is φ = 90472798.

The previous prime is 90472729. The next prime is 90472801. The reversal of 90472799 is 99727409.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90472799 is a prime.

It is a Sophie Germain prime.

Together with 90472801, 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 (90472709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45236399 + 45236400.

It is an arithmetic number, because the mean of its divisors is an integer number (45236400).

Almost surely, 2^90472799 is an apocalyptic number.

90472799 is a deficient number, since it is larger than the sum of its proper divisors (1).

90472799 is an equidigital number, since it uses as much as digits as its factorization.

90472799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 90472799 is about 9511.7190349589. The cubic root of 90472799 is about 448.9238465893.

The spelling of 90472799 in words is "ninety million, four hundred seventy-two thousand, seven hundred ninety-nine".