89764139 has 4 divisors (see below), whose sum is σ = 91457856. Its totient is φ = 88070424.

The previous prime is 89764117. The next prime is 89764159. The reversal of 89764139 is 93146798.

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 89764139 - 2¹² = 89760043 is a prime.

It is a super-2 number, since 2×89764139² = 16115201300822642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89764093 and 89764102.

It is not an unprimeable number, because it can be changed into a prime (89764159) 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, 846779 + ... + 846884.

It is an arithmetic number, because the mean of its divisors is an integer number (22864464).

Almost surely, 2^89764139 is an apocalyptic number.

89764139 is a deficient number, since it is larger than the sum of its proper divisors (1693717).

89764139 is a wasteful number, since it uses less digits than its factorization.

89764139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693716.

The product of its digits is 326592, while the sum is 47.

The square root of 89764139 is about 9474.3938592398. The cubic root of 89764139 is about 447.7486549173.

The spelling of 89764139 in words is "eighty-nine million, seven hundred sixty-four thousand, one hundred thirty-nine".