402438337 has 24 divisors (see below), whose sum is σ = 484162560. Its totient is φ = 327645120.

The previous prime is 402438319. The next prime is 402438341. The reversal of 402438337 is 733834204.

It is a happy number.

It is not a de Polignac number, because 402438337 - 2⁷ = 402438209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402438317) 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 23 ways as a sum of consecutive naturals, for example, 706989 + ... + 707557.

It is an arithmetic number, because the mean of its divisors is an integer number (20173440).

Almost surely, 2^402438337 is an apocalyptic number.

It is an amenable number.

402438337 is a deficient number, since it is larger than the sum of its proper divisors (81724223).

402438337 is a wasteful number, since it uses less digits than its factorization.

402438337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 402438337 is about 20060.8658088329. The cubic root of 402438337 is about 738.3004195738.

The spelling of 402438337 in words is "four hundred two million, four hundred thirty-eight thousand, three hundred thirty-seven".