401342399 has 16 divisors (see below), whose sum is σ = 426107136. Its totient is φ = 377395200.

The previous prime is 401342371. The next prime is 401342413. The reversal of 401342399 is 993243104.

It is a cyclic number.

It is not a de Polignac number, because 401342399 - 2⁸ = 401342143 is a prime.

It is a super-2 number, since 2×401342399² = 322151442470150402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401342329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427859 + ... + 428795.

It is an arithmetic number, because the mean of its divisors is an integer number (26631696).

Almost surely, 2^401342399 is an apocalyptic number.

401342399 is a deficient number, since it is larger than the sum of its proper divisors (24764737).

401342399 is a wasteful number, since it uses less digits than its factorization.

401342399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 401342399 is about 20033.5318653502. The cubic root of 401342399 is about 737.6296194275.

The spelling of 401342399 in words is "four hundred one million, three hundred forty-two thousand, three hundred ninety-nine".