89928013 has 4 divisors (see below), whose sum is σ = 102774880. Its totient is φ = 77081148.

The previous prime is 89927987. The next prime is 89928049. The reversal of 89928013 is 31082998.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31082998 = 2 ⋅15541499.

It is a cyclic number.

It is not a de Polignac number, because 89928013 - 2¹³ = 89919821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89928313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6423423 + ... + 6423436.

It is an arithmetic number, because the mean of its divisors is an integer number (25693720).

Almost surely, 2^89928013 is an apocalyptic number.

It is an amenable number.

89928013 is a deficient number, since it is larger than the sum of its proper divisors (12846867).

89928013 is a wasteful number, since it uses less digits than its factorization.

89928013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12846866.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 89928013 is about 9483.0381734969. The cubic root of 89928013 is about 448.0209602359.

The spelling of 89928013 in words is "eighty-nine million, nine hundred twenty-eight thousand, thirteen".