89401831 has 4 divisors (see below), whose sum is σ = 91088712. Its totient is φ = 87714952.

The previous prime is 89401801. The next prime is 89401889. The reversal of 89401831 is 13810498.

It is a happy number.

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 89401831 - 2⁷ = 89401703 is a prime.

It is a super-2 number, since 2×89401831² = 15985374772305122, 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 (89401801) 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, 843361 + ... + 843466.

It is an arithmetic number, because the mean of its divisors is an integer number (22772178).

Almost surely, 2^89401831 is an apocalyptic number.

89401831 is a deficient number, since it is larger than the sum of its proper divisors (1686881).

89401831 is a wasteful number, since it uses less digits than its factorization.

89401831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686880.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 89401831 is about 9455.2541478270. The cubic root of 89401831 is about 447.1454382797.

The spelling of 89401831 in words is "eighty-nine million, four hundred one thousand, eight hundred thirty-one".