90949197 has 4 divisors (see below), whose sum is σ = 121265600. Its totient is φ = 60632796.

The previous prime is 90949163. The next prime is 90949207. The reversal of 90949197 is 79194909.

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 not a de Polignac number, because 90949197 - 2⁷ = 90949069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90949147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15158197 + ... + 15158202.

It is an arithmetic number, because the mean of its divisors is an integer number (30316400).

Almost surely, 2^90949197 is an apocalyptic number.

It is an amenable number.

90949197 is a deficient number, since it is larger than the sum of its proper divisors (30316403).

90949197 is a wasteful number, since it uses less digits than its factorization.

90949197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30316402.

The product of its (nonzero) digits is 183708, while the sum is 48.

The square root of 90949197 is about 9536.7288416941. The cubic root of 90949197 is about 449.7104260455.

The spelling of 90949197 in words is "ninety million, nine hundred forty-nine thousand, one hundred ninety-seven".