89652981 has 16 divisors (see below), whose sum is σ = 132545088. Its totient is φ = 53443200.

The previous prime is 89652947. The next prime is 89652991. The reversal of 89652981 is 18925698.

It is a happy number.

It is not a de Polignac number, because 89652981 - 2¹⁷ = 89521909 is a prime.

It is a super-2 number, since 2×89652981² = 16075314004372722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 89652981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89652911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20256 + ... + 24281.

It is an arithmetic number, because the mean of its divisors is an integer number (8284068).

Almost surely, 2^89652981 is an apocalyptic number.

It is an amenable number.

89652981 is a deficient number, since it is larger than the sum of its proper divisors (42892107).

89652981 is a wasteful number, since it uses less digits than its factorization.

89652981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44612.

The product of its digits is 311040, while the sum is 48.

The square root of 89652981 is about 9468.5258092271. The cubic root of 89652981 is about 447.5637577561.

The spelling of 89652981 in words is "eighty-nine million, six hundred fifty-two thousand, nine hundred eighty-one".