90843897 has 8 divisors (see below), whose sum is σ = 121212000. Its totient is φ = 60519200.

The previous prime is 90843889. The next prime is 90843911. The reversal of 90843897 is 79834809.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90843897 - 2³ = 90843889 is a prime.

It is a super-2 number, since 2×90843897² = 16505227244293218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90843817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5604 + ... + 14597.

It is an arithmetic number, because the mean of its divisors is an integer number (15151500).

Almost surely, 2^90843897 is an apocalyptic number.

It is an amenable number.

90843897 is a deficient number, since it is larger than the sum of its proper divisors (30368103).

90843897 is a wasteful number, since it uses less digits than its factorization.

90843897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21703.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 90843897 is about 9531.2064818679. The cubic root of 90843897 is about 449.5368023937.

The spelling of 90843897 in words is "ninety million, eight hundred forty-three thousand, eight hundred ninety-seven".