99976859 has 4 divisors (see below), whose sum is σ = 100298640. Its totient is φ = 99655080.

The previous prime is 99976843. The next prime is 99976861. The reversal of 99976859 is 95867999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95867999 = 37 ⋅2591027.

It is a cyclic number.

It is not a de Polignac number, because 99976859 - 2⁴ = 99976843 is a prime.

It is a super-3 number, since 3×99976859³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99976759) 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, 160424 + ... + 161045.

It is an arithmetic number, because the mean of its divisors is an integer number (25074660).

Almost surely, 2^99976859 is an apocalyptic number.

99976859 is a deficient number, since it is larger than the sum of its proper divisors (321781).

99976859 is a wasteful number, since it uses less digits than its factorization.

99976859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321780.

The product of its digits is 11022480, while the sum is 62.

The square root of 99976859 is about 9998.8428830540. The cubic root of 99976859 is about 464.1230769301.

The spelling of 99976859 in words is "ninety-nine million, nine hundred seventy-six thousand, eight hundred fifty-nine".