7712989 has 2 divisors, whose sum is σ = 7712990. Its totient is φ = 7712988.

The previous prime is 7712987. The next prime is 7713047. The reversal of 7712989 is 9892177.

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., 7064964 + 648025 = 2658^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 7712989 - 2¹ = 7712987 is a prime.

Together with 7712987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7712987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3856494 + 3856495.

It is an arithmetic number, because the mean of its divisors is an integer number (3856495).

Almost surely, 2^7712989 is an apocalyptic number.

It is an amenable number.

7712989 is a deficient number, since it is larger than the sum of its proper divisors (1).

7712989 is an equidigital number, since it uses as much as digits as its factorization.

7712989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 43.

The square root of 7712989 is about 2777.2268542559. The cubic root of 7712989 is about 197.5790550366.

The spelling of 7712989 in words is "seven million, seven hundred twelve thousand, nine hundred eighty-nine".