79199401 has 2 divisors, whose sum is σ = 79199402. Its totient is φ = 79199400.

The previous prime is 79199383. The next prime is 79199423. The reversal of 79199401 is 10499197.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78783376 + 416025 = 8876^2 + 645^2 .

It is a cyclic number.

It is not a de Polignac number, because 79199401 - 2²³ = 70810793 is a prime.

It is not a weakly prime, because it can be changed into another prime (79199431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39599700 + 39599701.

It is an arithmetic number, because the mean of its divisors is an integer number (39599701).

Almost surely, 2^79199401 is an apocalyptic number.

It is an amenable number.

79199401 is a deficient number, since it is larger than the sum of its proper divisors (1).

79199401 is an equidigital number, since it uses as much as digits as its factorization.

79199401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 79199401 is about 8899.4045306414. The cubic root of 79199401 is about 429.4447511493. Note that the first 3 decimals are identical.

The spelling of 79199401 in words is "seventy-nine million, one hundred ninety-nine thousand, four hundred one".