4312761989 has 2 divisors, whose sum is σ = 4312761990. Its totient is φ = 4312761988.

The previous prime is 4312761983. The next prime is 4312762001. The reversal of 4312761989 is 9891672134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3792465889 + 520296100 = 61583^2 + 22810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4312761989 is a prime.

It is a super-2 number, since 2×4312761989² = 37199831947526472242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4312761983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2156380994 + 2156380995.

It is an arithmetic number, because the mean of its divisors is an integer number (2156380995).

Almost surely, 2^4312761989 is an apocalyptic number.

It is an amenable number.

4312761989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4312761989 is an equidigital number, since it uses as much as digits as its factorization.

4312761989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 50.

The square root of 4312761989 is about 65671.6224026786. The cubic root of 4312761989 is about 1627.7404788733.

The spelling of 4312761989 in words is "four billion, three hundred twelve million, seven hundred sixty-one thousand, nine hundred eighty-nine".