90915329 has 2 divisors, whose sum is σ = 90915330. Its totient is φ = 90915328.

The previous prime is 90915317. The next prime is 90915347. The reversal of 90915329 is 92351909.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89340304 + 1575025 = 9452^2 + 1255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90915329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90915292 and 90915301.

It is not a weakly prime, because it can be changed into another prime (90915379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45457664 + 45457665.

It is an arithmetic number, because the mean of its divisors is an integer number (45457665).

Almost surely, 2^90915329 is an apocalyptic number.

It is an amenable number.

90915329 is a deficient number, since it is larger than the sum of its proper divisors (1).

90915329 is an equidigital number, since it uses as much as digits as its factorization.

90915329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 90915329 is about 9534.9530150914. The cubic root of 90915329 is about 449.6545975017.

The spelling of 90915329 in words is "ninety million, nine hundred fifteen thousand, three hundred twenty-nine".