363957421 has 2 divisors, whose sum is σ = 363957422. Its totient is φ = 363957420.

The previous prime is 363957389. The next prime is 363957427. The reversal of 363957421 is 124759363.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357777225 + 6180196 = 18915^2 + 2486^2 .

It is a cyclic number.

It is not a de Polignac number, because 363957421 - 2⁵ = 363957389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (363957427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181978710 + 181978711.

It is an arithmetic number, because the mean of its divisors is an integer number (181978711).

Almost surely, 2^363957421 is an apocalyptic number.

It is an amenable number.

363957421 is a deficient number, since it is larger than the sum of its proper divisors (1).

363957421 is an equidigital number, since it uses as much as digits as its factorization.

363957421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 40.

The square root of 363957421 is about 19077.6681227030. The cubic root of 363957421 is about 713.9758568470.

The spelling of 363957421 in words is "three hundred sixty-three million, nine hundred fifty-seven thousand, four hundred twenty-one".