90473729 has 2 divisors, whose sum is σ = 90473730. Its totient is φ = 90473728.

The previous prime is 90473701. The next prime is 90473737. The reversal of 90473729 is 92737409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90250000 + 223729 = 9500^2 + 473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90473729 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90473749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45236864 + 45236865.

It is an arithmetic number, because the mean of its divisors is an integer number (45236865).

Almost surely, 2^90473729 is an apocalyptic number.

It is an amenable number.

90473729 is a deficient number, since it is larger than the sum of its proper divisors (1).

90473729 is an equidigital number, since it uses as much as digits as its factorization.

90473729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 90473729 is about 9511.7679218955. The cubic root of 90473729 is about 448.9253847965.

The spelling of 90473729 in words is "ninety million, four hundred seventy-three thousand, seven hundred twenty-nine".