761394989 has 2 divisors, whose sum is σ = 761394990. Its totient is φ = 761394988.

The previous prime is 761394883. The next prime is 761395003. The reversal of 761394989 is 989493167.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417589225 + 343805764 = 20435^2 + 18542^2 .

It is a cyclic number.

It is not a de Polignac number, because 761394989 - 2²⁴ = 744617773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (761390989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380697494 + 380697495.

It is an arithmetic number, because the mean of its divisors is an integer number (380697495).

Almost surely, 2^761394989 is an apocalyptic number.

It is an amenable number.

761394989 is a deficient number, since it is larger than the sum of its proper divisors (1).

761394989 is an equidigital number, since it uses as much as digits as its factorization.

761394989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 56.

The square root of 761394989 is about 27593.3866895675. The cubic root of 761394989 is about 913.1385365936.

The spelling of 761394989 in words is "seven hundred sixty-one million, three hundred ninety-four thousand, nine hundred eighty-nine".