365945421 has 16 divisors (see below), whose sum is σ = 504232448. Its totient is φ = 235828800.

The previous prime is 365945413. The next prime is 365945441. The reversal of 365945421 is 124549563.

It is not a de Polignac number, because 365945421 - 2³ = 365945413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 365945421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (365945441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113451 + ... + 116631.

It is an arithmetic number, because the mean of its divisors is an integer number (31514528).

Almost surely, 2^365945421 is an apocalyptic number.

365945421 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

365945421 is a deficient number, since it is larger than the sum of its proper divisors (138287027).

365945421 is a wasteful number, since it uses less digits than its factorization.

365945421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4452.

The product of its digits is 129600, while the sum is 39.

The square root of 365945421 is about 19129.6999715103. The cubic root of 365945421 is about 715.2734514064.

The spelling of 365945421 in words is "three hundred sixty-five million, nine hundred forty-five thousand, four hundred twenty-one".