99622619 has 4 divisors (see below), whose sum is σ = 99645000. Its totient is φ = 99600240.

The previous prime is 99622583. The next prime is 99622631. The reversal of 99622619 is 91622699.

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 99622619 - 2¹² = 99618523 is a prime.

It is a super-2 number, since 2×99622619² = 19849332432838322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99622619.

It is not an unprimeable number, because it can be changed into a prime (99622519) 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, 1994 + ... + 14255.

It is an arithmetic number, because the mean of its divisors is an integer number (24911250).

Almost surely, 2^99622619 is an apocalyptic number.

99622619 is a deficient number, since it is larger than the sum of its proper divisors (22381).

99622619 is a wasteful number, since it uses less digits than its factorization.

99622619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22380.

The product of its digits is 104976, while the sum is 44.

The square root of 99622619 is about 9981.1131142774. The cubic root of 99622619 is about 463.5742648518.

The spelling of 99622619 in words is "ninety-nine million, six hundred twenty-two thousand, six hundred nineteen".