78792401 has 2 divisors, whose sum is σ = 78792402. Its totient is φ = 78792400.

The previous prime is 78792379. The next prime is 78792473. The reversal of 78792401 is 10429787.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78783376 + 9025 = 8876^2 + 95^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78792401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78797401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39396200 + 39396201.

It is an arithmetic number, because the mean of its divisors is an integer number (39396201).

Almost surely, 2^78792401 is an apocalyptic number.

It is an amenable number.

78792401 is a deficient number, since it is larger than the sum of its proper divisors (1).

78792401 is an equidigital number, since it uses as much as digits as its factorization.

78792401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 78792401 is about 8876.5083788616. The cubic root of 78792401 is about 428.7078589084.

The spelling of 78792401 in words is "seventy-eight million, seven hundred ninety-two thousand, four hundred one".