80950913 has 2 divisors, whose sum is σ = 80950914. Its totient is φ = 80950912.

The previous prime is 80950907. The next prime is 80950993. The reversal of 80950913 is 31905908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72471169 + 8479744 = 8513^2 + 2912^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80950913 is a prime.

It is equal to p_4721696 and since 80950913 and 4721696 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (80950993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40475456 + 40475457.

It is an arithmetic number, because the mean of its divisors is an integer number (40475457).

Almost surely, 2^80950913 is an apocalyptic number.

It is an amenable number.

80950913 is a deficient number, since it is larger than the sum of its proper divisors (1).

80950913 is an equidigital number, since it uses as much as digits as its factorization.

80950913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 80950913 is about 8997.2725311619. The cubic root of 80950913 is about 432.5874513262.

The spelling of 80950913 in words is "eighty million, nine hundred fifty thousand, nine hundred thirteen".