402344111 has 16 divisors (see below), whose sum is σ = 453333888. Its totient is φ = 354604800.

The previous prime is 402344081. The next prime is 402344113. The reversal of 402344111 is 111443204.

It is a cyclic number.

It is not a de Polignac number, because 402344111 - 2²⁶ = 335235247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402344113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17021 + ... + 33081.

It is an arithmetic number, because the mean of its divisors is an integer number (28333368).

Almost surely, 2^402344111 is an apocalyptic number.

402344111 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

402344111 is a deficient number, since it is larger than the sum of its proper divisors (50989777).

402344111 is a wasteful number, since it uses less digits than its factorization.

402344111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16162.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 402344111 is about 20058.5171685247. The cubic root of 402344111 is about 738.2427937473.

Adding to 402344111 its reverse (111443204), we get a palindrome (513787315).

The spelling of 402344111 in words is "four hundred two million, three hundred forty-four thousand, one hundred eleven".