78092401 has 2 divisors, whose sum is σ = 78092402. Its totient is φ = 78092400.

The previous prime is 78092359. The next prime is 78092419. The reversal of 78092401 is 10429087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74390625 + 3701776 = 8625^2 + 1924^2 .

It is an emirp because it is prime and its reverse (10429087) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78092401 - 2¹⁵ = 78059633 is a prime.

It is not a weakly prime, because it can be changed into another prime (78092431) 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, 39046200 + 39046201.

It is an arithmetic number, because the mean of its divisors is an integer number (39046201).

Almost surely, 2^78092401 is an apocalyptic number.

It is an amenable number.

78092401 is a deficient number, since it is larger than the sum of its proper divisors (1).

78092401 is an equidigital number, since it uses as much as digits as its factorization.

78092401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 78092401 is about 8836.9904945066. The cubic root of 78092401 is about 427.4345186574.

The spelling of 78092401 in words is "seventy-eight million, ninety-two thousand, four hundred one".