90452169 has 12 divisors (see below), whose sum is σ = 136334016. Its totient is φ = 57679512.

The previous prime is 90452149. The next prime is 90452221. The reversal of 90452169 is 96125409.

It is not a de Polignac number, because 90452169 - 2⁷ = 90452041 is a prime.

It is a super-2 number, since 2×90452169² = 16363189753609122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90452119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218277 + ... + 218690.

It is an arithmetic number, because the mean of its divisors is an integer number (11361168).

Almost surely, 2^90452169 is an apocalyptic number.

It is an amenable number.

90452169 is a deficient number, since it is larger than the sum of its proper divisors (45881847).

90452169 is a wasteful number, since it uses less digits than its factorization.

90452169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436996 (or 436993 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 90452169 is about 9510.6345214186. The cubic root of 90452169 is about 448.8897221413.

The spelling of 90452169 in words is "ninety million, four hundred fifty-two thousand, one hundred sixty-nine".