369431989 has 2 divisors, whose sum is σ = 369431990. Its totient is φ = 369431988.

The previous prime is 369431971. The next prime is 369431999. The reversal of 369431989 is 989134963.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335988900 + 33443089 = 18330^2 + 5783^2 .

It is a cyclic number.

It is not a de Polignac number, because 369431989 - 2²¹ = 367334837 is a prime.

It is a super-2 number, since 2×369431989² = 272959988992992242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (369431999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184715994 + 184715995.

It is an arithmetic number, because the mean of its divisors is an integer number (184715995).

Almost surely, 2^369431989 is an apocalyptic number.

It is an amenable number.

369431989 is a deficient number, since it is larger than the sum of its proper divisors (1).

369431989 is an equidigital number, since it uses as much as digits as its factorization.

369431989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1259712, while the sum is 52.

The square root of 369431989 is about 19220.6136478521. The cubic root of 369431989 is about 717.5378793228.

The spelling of 369431989 in words is "three hundred sixty-nine million, four hundred thirty-one thousand, nine hundred eighty-nine".