90955789 has 4 divisors (see below), whose sum is σ = 91650240. Its totient is φ = 90261340.

The previous prime is 90955759. The next prime is 90955801. The reversal of 90955789 is 98755909.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90955789 is a prime.

It is a super-2 number, since 2×90955789² = 16545911105225042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90955759) 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 in 3 ways as a sum of consecutive naturals, for example, 347029 + ... + 347290.

It is an arithmetic number, because the mean of its divisors is an integer number (22912560).

Almost surely, 2^90955789 is an apocalyptic number.

It is an amenable number.

90955789 is a deficient number, since it is larger than the sum of its proper divisors (694451).

90955789 is a wasteful number, since it uses less digits than its factorization.

90955789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694450.

The product of its (nonzero) digits is 1020600, while the sum is 52.

The square root of 90955789 is about 9537.0744466005. The cubic root of 90955789 is about 449.7212907905.

It can be divided in two parts, 9095 and 5789, that added together give a square (14884 = 122²).

The spelling of 90955789 in words is "ninety million, nine hundred fifty-five thousand, seven hundred eighty-nine".