402334401 has 8 divisors (see below), whose sum is σ = 613081024. Its totient is φ = 229905360.

The previous prime is 402334391. The next prime is 402334417. The reversal of 402334401 is 104433204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 402334401 - 2¹³ = 402326209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 19158781 = 402334401 / (4 + 0 + 2 + 3 + 3 + 4 + 4 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402334441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9579370 + ... + 9579411.

It is an arithmetic number, because the mean of its divisors is an integer number (76635128).

Almost surely, 2^402334401 is an apocalyptic number.

It is an amenable number.

402334401 is a deficient number, since it is larger than the sum of its proper divisors (210746623).

402334401 is a wasteful number, since it uses less digits than its factorization.

402334401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19158791.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 402334401 is about 20058.2751252444. The cubic root of 402334401 is about 738.2368548880.

Adding to 402334401 its reverse (104433204), we get a palindrome (506767605).

The spelling of 402334401 in words is "four hundred two million, three hundred thirty-four thousand, four hundred one".