90990059 has 2 divisors, whose sum is σ = 90990060. Its totient is φ = 90990058.

The previous prime is 90990049. The next prime is 90990077. The reversal of 90990059 is 95009909.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90990059 - 2¹⁶ = 90924523 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 90989998 and 90990025.

It is not a weakly prime, because it can be changed into another prime (90990019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45495029 + 45495030.

It is an arithmetic number, because the mean of its divisors is an integer number (45495030).

Almost surely, 2^90990059 is an apocalyptic number.

90990059 is a deficient number, since it is larger than the sum of its proper divisors (1).

90990059 is an equidigital number, since it uses as much as digits as its factorization.

90990059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32805, while the sum is 41.

The square root of 90990059 is about 9538.8709499605. The cubic root of 90990059 is about 449.7777651634. Note that the first 4 decimals are identical.

The spelling of 90990059 in words is "ninety million, nine hundred ninety thousand, fifty-nine".