99562381 has 4 divisors (see below), whose sum is σ = 99979200. Its totient is φ = 99145564.

The previous prime is 99562373. The next prime is 99562399. The reversal of 99562381 is 18326599.

It is a happy number.

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: 18326599 = 3209 ⋅5711.

It is a cyclic number.

It is not a de Polignac number, because 99562381 - 2³ = 99562373 is a prime.

It is a super-2 number, since 2×99562381² = 19825335420778322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99562321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208051 + ... + 208528.

It is an arithmetic number, because the mean of its divisors is an integer number (24994800).

Almost surely, 2^99562381 is an apocalyptic number.

It is an amenable number.

99562381 is a deficient number, since it is larger than the sum of its proper divisors (416819).

99562381 is a wasteful number, since it uses less digits than its factorization.

99562381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416818.

The product of its digits is 116640, while the sum is 43.

The square root of 99562381 is about 9978.0950586773. The cubic root of 99562381 is about 463.4808107845.

The spelling of 99562381 in words is "ninety-nine million, five hundred sixty-two thousand, three hundred eighty-one".