79199442 has 48 divisors (see below), whose sum is σ = 204647040. Its totient is φ = 21643776.

The previous prime is 79199441. The next prime is 79199443. The reversal of 79199442 is 24499197.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (79199441) and next prime (79199443).

It is a super-2 number, since 2×79199442² = 12545103226222728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79199441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10767 + ... + 16562.

It is an arithmetic number, because the mean of its divisors is an integer number (4263480).

Almost surely, 2^79199442 is an apocalyptic number.

79199442 is an abundant number, since it is smaller than the sum of its proper divisors (125447598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79199442 is a wasteful number, since it uses less digits than its factorization.

79199442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27367 (or 27364 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 79199442 is about 8899.4068341660. The cubic root of 79199442 is about 429.4448252544. Note that the first 3 decimals are identical.

The spelling of 79199442 in words is "seventy-nine million, one hundred ninety-nine thousand, four hundred forty-two".