364395821 has 2 divisors, whose sum is σ = 364395822. Its totient is φ = 364395820.

The previous prime is 364395809. The next prime is 364395827. The reversal of 364395821 is 128593463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 284293321 + 80102500 = 16861^2 + 8950^2 .

It is a cyclic number.

It is not a de Polignac number, because 364395821 - 2¹⁴ = 364379437 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (364395827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182197910 + 182197911.

It is an arithmetic number, because the mean of its divisors is an integer number (182197911).

Almost surely, 2^364395821 is an apocalyptic number.

It is an amenable number.

364395821 is a deficient number, since it is larger than the sum of its proper divisors (1).

364395821 is an equidigital number, since it uses as much as digits as its factorization.

364395821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 364395821 is about 19089.1545386379. The cubic root of 364395821 is about 714.2624118169.

The spelling of 364395821 in words is "three hundred sixty-four million, three hundred ninety-five thousand, eight hundred twenty-one".