202402399 has 4 divisors (see below), whose sum is σ = 202640536. Its totient is φ = 202164264.

The previous prime is 202402367. The next prime is 202402411. The reversal of 202402399 is 993204202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202402399 - 2⁵ = 202402367 is a prime.

It is a super-2 number, since 2×202402399² = 81933462241910402, which contains 22 as substring.

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 202402399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202402309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117789 + ... + 119494.

It is an arithmetic number, because the mean of its divisors is an integer number (50660134).

Almost surely, 2^202402399 is an apocalyptic number.

202402399 is a deficient number, since it is larger than the sum of its proper divisors (238137).

202402399 is an equidigital number, since it uses as much as digits as its factorization.

202402399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238136.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 202402399 is about 14226.8197078616. The cubic root of 202402399 is about 587.1357865703.

The spelling of 202402399 in words is "two hundred two million, four hundred two thousand, three hundred ninety-nine".