80358749 has 2 divisors, whose sum is σ = 80358750. Its totient is φ = 80358748.

The previous prime is 80358737. The next prime is 80358791. The reversal of 80358749 is 94785308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70392100 + 9966649 = 8390^2 + 3157^2 .

It is a cyclic number.

It is not a de Polignac number, because 80358749 - 2⁸ = 80358493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80658749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40179374 + 40179375.

It is an arithmetic number, because the mean of its divisors is an integer number (40179375).

Almost surely, 2^80358749 is an apocalyptic number.

It is an amenable number.

80358749 is a deficient number, since it is larger than the sum of its proper divisors (1).

80358749 is an equidigital number, since it uses as much as digits as its factorization.

80358749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 80358749 is about 8964.3041559287. The cubic root of 80358749 is about 431.5300620373.

The spelling of 80358749 in words is "eighty million, three hundred fifty-eight thousand, seven hundred forty-nine".