79631401 has 2 divisors, whose sum is σ = 79631402. Its totient is φ = 79631400.

The previous prime is 79631371. The next prime is 79631423. The reversal of 79631401 is 10413697.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72233001 + 7398400 = 8499^2 + 2720^2 .

It is a cyclic number.

It is not a de Polignac number, because 79631401 - 2¹³ = 79623209 is a prime.

It is not a weakly prime, because it can be changed into another prime (79631441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39815700 + 39815701.

It is an arithmetic number, because the mean of its divisors is an integer number (39815701).

Almost surely, 2^79631401 is an apocalyptic number.

It is an amenable number.

79631401 is a deficient number, since it is larger than the sum of its proper divisors (1).

79631401 is an equidigital number, since it uses as much as digits as its factorization.

79631401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 79631401 is about 8923.6428099740. The cubic root of 79631401 is about 430.2241503061.

The spelling of 79631401 in words is "seventy-nine million, six hundred thirty-one thousand, four hundred one".