89649431 has 4 divisors (see below), whose sum is σ = 89890152. Its totient is φ = 89408712.

The previous prime is 89649407. The next prime is 89649451. The reversal of 89649431 is 13494698.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89649431 - 2¹⁰ = 89648407 is a prime.

It is a super-2 number, since 2×89649431² = 16074040957247522, 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 (89649401) 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, 119801 + ... + 120546.

It is an arithmetic number, because the mean of its divisors is an integer number (22472538).

Almost surely, 2^89649431 is an apocalyptic number.

89649431 is a deficient number, since it is larger than the sum of its proper divisors (240721).

89649431 is a wasteful number, since it uses less digits than its factorization.

89649431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240720.

The product of its digits is 186624, while the sum is 44.

The square root of 89649431 is about 9468.3383441869. The cubic root of 89649431 is about 447.5578502659.

The spelling of 89649431 in words is "eighty-nine million, six hundred forty-nine thousand, four hundred thirty-one".