90406853 has 2 divisors, whose sum is σ = 90406854. Its totient is φ = 90406852.

The previous prime is 90406847. The next prime is 90406861. The reversal of 90406853 is 35860409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89737729 + 669124 = 9473^2 + 818^2 .

It is a cyclic number.

It is not a de Polignac number, because 90406853 - 2¹⁰ = 90405829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90406843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45203426 + 45203427.

It is an arithmetic number, because the mean of its divisors is an integer number (45203427).

Almost surely, 2^90406853 is an apocalyptic number.

It is an amenable number.

90406853 is a deficient number, since it is larger than the sum of its proper divisors (1).

90406853 is an equidigital number, since it uses as much as digits as its factorization.

90406853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 90406853 is about 9508.2518372201. The cubic root of 90406853 is about 448.8147459232.

The spelling of 90406853 in words is "ninety million, four hundred six thousand, eight hundred fifty-three".