366445889 has 2 divisors, whose sum is σ = 366445890. Its totient is φ = 366445888.

The previous prime is 366445879. The next prime is 366445967. The reversal of 366445889 is 988544663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192654400 + 173791489 = 13880^2 + 13183^2 .

It is a cyclic number.

It is not a de Polignac number, because 366445889 - 2⁸ = 366445633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 366445889.

It is not a weakly prime, because it can be changed into another prime (366445879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 183222944 + 183222945.

It is an arithmetic number, because the mean of its divisors is an integer number (183222945).

Almost surely, 2^366445889 is an apocalyptic number.

It is an amenable number.

366445889 is a deficient number, since it is larger than the sum of its proper divisors (1).

366445889 is an equidigital number, since it uses as much as digits as its factorization.

366445889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 53.

The square root of 366445889 is about 19142.7764182733. The cubic root of 366445889 is about 715.5993728776.

The spelling of 366445889 in words is "three hundred sixty-six million, four hundred forty-five thousand, eight hundred eighty-nine".