716889149 has 2 divisors, whose sum is σ = 716889150. Its totient is φ = 716889148.

The previous prime is 716889143. The next prime is 716889179. The reversal of 716889149 is 941988617.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 533286649 + 183602500 = 23093^2 + 13550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-716889149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 716889149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (716889143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358444574 + 358444575.

It is an arithmetic number, because the mean of its divisors is an integer number (358444575).

Almost surely, 2^716889149 is an apocalyptic number.

It is an amenable number.

716889149 is a deficient number, since it is larger than the sum of its proper divisors (1).

716889149 is an equidigital number, since it uses as much as digits as its factorization.

716889149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 53.

The square root of 716889149 is about 26774.7856947539. The cubic root of 716889149 is about 894.9882540618.

The spelling of 716889149 in words is "seven hundred sixteen million, eight hundred eighty-nine thousand, one hundred forty-nine".