99422856431 has 4 divisors (see below), whose sum is σ = 100302704832. Its totient is φ = 98543008032.

The previous prime is 99422856383. The next prime is 99422856443. The reversal of 99422856431 is 13465822499.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99422856431 - 2¹⁸ = 99422594287 is a prime.

It is a super-2 number, since 2×99422856431² (a number of 23 digits) 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 (99422846431) 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, 439924031 + ... + 439924256.

It is an arithmetic number, because the mean of its divisors is an integer number (25075676208).

Almost surely, 2^99422856431 is an apocalyptic number.

99422856431 is a deficient number, since it is larger than the sum of its proper divisors (879848401).

99422856431 is a wasteful number, since it uses less digits than its factorization.

99422856431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879848400.

The product of its digits is 3732480, while the sum is 53.

The spelling of 99422856431 in words is "ninety-nine billion, four hundred twenty-two million, eight hundred fifty-six thousand, four hundred thirty-one".