366990649 has 3 divisors (see below), whose sum is σ = 367009807. Its totient is φ = 366971492.

The previous prime is 366990619. The next prime is 366990661. The reversal of 366990649 is 946099663.

It is a happy number.

The square root of 366990649 is 19157.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 10989225 + 356001424 = 3315^2 + 18868^2 .

It is not a de Polignac number, because 366990649 - 2⁹ = 366990137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 366990596 and 366990605.

It is not an unprimeable number, because it can be changed into a prime (366990619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9579 + ... + 28735.

Almost surely, 2^366990649 is an apocalyptic number.

366990649 is the 19157-th square number.

366990649 is the 9579-th centered octagonal number.

It is an amenable number.

366990649 is a deficient number, since it is larger than the sum of its proper divisors (19158).

366990649 is an frugal number, since it uses more digits than its factorization.

366990649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38314 (or 19157 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 52.

The cubic root of 366990649 is about 715.9538016497.

The spelling of 366990649 in words is "three hundred sixty-six million, nine hundred ninety thousand, six hundred forty-nine".