99956381 has 8 divisors (see below), whose sum is σ = 116892864. Its totient is φ = 83684160.

The previous prime is 99956377. The next prime is 99956387. The reversal of 99956381 is 18365999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99956381 - 2² = 99956377 is a prime.

It is a super-2 number, since 2×99956381² = 19982556205234322, 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 (99956387) 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 7 ways as a sum of consecutive naturals, for example, 165740 + ... + 166341.

It is an arithmetic number, because the mean of its divisors is an integer number (14611608).

Almost surely, 2^99956381 is an apocalyptic number.

It is an amenable number.

99956381 is a deficient number, since it is larger than the sum of its proper divisors (16936483).

99956381 is a wasteful number, since it uses less digits than its factorization.

99956381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332131.

The product of its digits is 524880, while the sum is 50.

The square root of 99956381 is about 9997.8188121210. The cubic root of 99956381 is about 464.0913863920.

The spelling of 99956381 in words is "ninety-nine million, nine hundred fifty-six thousand, three hundred eighty-one".