80779401 has 6 divisors (see below), whose sum is σ = 116681370. Its totient is φ = 53852928.

The previous prime is 80779373. The next prime is 80779453. The reversal of 80779401 is 10497708.

It can be written as a sum of positive squares in only one way, i.e., 73359225 + 7420176 = 8565^2 + 2724^2 .

It is not a de Polignac number, because 80779401 - 2⁹ = 80778889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80779481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4487736 + ... + 4487753.

It is an arithmetic number, because the mean of its divisors is an integer number (19446895).

Almost surely, 2^80779401 is an apocalyptic number.

It is an amenable number.

80779401 is a deficient number, since it is larger than the sum of its proper divisors (35901969).

80779401 is a wasteful number, since it uses less digits than its factorization.

80779401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8975495 (or 8975492 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 80779401 is about 8987.7361443247. The cubic root of 80779401 is about 432.2817253144.

It can be divided in two parts, 807 and 79401, that added together give a palindrome (80208).

The spelling of 80779401 in words is "eighty million, seven hundred seventy-nine thousand, four hundred one".