89692639 has 4 divisors (see below), whose sum is σ = 89842480. Its totient is φ = 89542800.

The previous prime is 89692627. The next prime is 89692657. The reversal of 89692639 is 93629698.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93629698 = 2 ⋅46814849.

It is a cyclic number.

It is not a de Polignac number, because 89692639 - 2⁷ = 89692511 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89692609) 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, 74019 + ... + 75220.

It is an arithmetic number, because the mean of its divisors is an integer number (22460620).

Almost surely, 2^89692639 is an apocalyptic number.

89692639 is a deficient number, since it is larger than the sum of its proper divisors (149841).

89692639 is a wasteful number, since it uses less digits than its factorization.

89692639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149840.

The product of its digits is 1259712, while the sum is 52.

The square root of 89692639 is about 9470.6197790852. The cubic root of 89692639 is about 447.6297413102.

The spelling of 89692639 in words is "eighty-nine million, six hundred ninety-two thousand, six hundred thirty-nine".