99952987 has 4 divisors (see below), whose sum is σ = 101322280. Its totient is φ = 98583696.

The previous prime is 99952981. The next prime is 99952997. The reversal of 99952987 is 78925999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78925999 = 193 ⋅408943.

It is a cyclic number.

It is not a de Polignac number, because 99952987 - 2²³ = 91564379 is a prime.

It is a super-2 number, since 2×99952987² = 19981199220444338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99952981) 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, 684537 + ... + 684682.

It is an arithmetic number, because the mean of its divisors is an integer number (25330570).

Almost surely, 2^99952987 is an apocalyptic number.

99952987 is a deficient number, since it is larger than the sum of its proper divisors (1369293).

99952987 is a wasteful number, since it uses less digits than its factorization.

99952987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369292.

The product of its digits is 3674160, while the sum is 58.

The square root of 99952987 is about 9997.6490736573. The cubic root of 99952987 is about 464.0861336209.

The spelling of 99952987 in words is "ninety-nine million, nine hundred fifty-two thousand, nine hundred eighty-seven".