80402957 has 2 divisors, whose sum is σ = 80402958. Its totient is φ = 80402956.

The previous prime is 80402951. The next prime is 80402999. The reversal of 80402957 is 75920408.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70879561 + 9523396 = 8419^2 + 3086^2 .

It is a cyclic number.

It is not a de Polignac number, because 80402957 - 2⁸ = 80402701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80402951) 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, 40201478 + 40201479.

It is an arithmetic number, because the mean of its divisors is an integer number (40201479).

Almost surely, 2^80402957 is an apocalyptic number.

It is an amenable number.

80402957 is a deficient number, since it is larger than the sum of its proper divisors (1).

80402957 is an equidigital number, since it uses as much as digits as its factorization.

80402957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 80402957 is about 8966.7695966831. The cubic root of 80402957 is about 431.6091805070.

The spelling of 80402957 in words is "eighty million, four hundred two thousand, nine hundred fifty-seven".