99951589 has 4 divisors (see below), whose sum is σ = 100885824. Its totient is φ = 99017356.

The previous prime is 99951569. The next prime is 99951601. The reversal of 99951589 is 98515999.

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: 98515999 = 113 ⋅871823.

It is a cyclic number.

It is not a de Polignac number, because 99951589 - 2⁵ = 99951557 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 (99951529) 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, 466957 + ... + 467170.

It is an arithmetic number, because the mean of its divisors is an integer number (25221456).

Almost surely, 2^99951589 is an apocalyptic number.

It is an amenable number.

99951589 is a deficient number, since it is larger than the sum of its proper divisors (934235).

99951589 is a wasteful number, since it uses less digits than its factorization.

99951589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934234.

The product of its digits is 1312200, while the sum is 55.

The square root of 99951589 is about 9997.5791569760. The cubic root of 99951589 is about 464.0839699522.

The spelling of 99951589 in words is "ninety-nine million, nine hundred fifty-one thousand, five hundred eighty-nine".