401408831 has 8 divisors (see below), whose sum is σ = 404804400. Its totient is φ = 398022912.

The previous prime is 401408809. The next prime is 401408849. The reversal of 401408831 is 138804104.

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

It is a cyclic number.

It is not a de Polignac number, because 401408831 - 2¹⁴ = 401392447 is a prime.

It is a super-2 number, since 2×401408831² = 322258099209573122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401408794 and 401408803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401408881) 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, 98276 + ... + 102278.

It is an arithmetic number, because the mean of its divisors is an integer number (50600550).

Almost surely, 2^401408831 is an apocalyptic number.

401408831 is a deficient number, since it is larger than the sum of its proper divisors (3395569).

401408831 is a wasteful number, since it uses less digits than its factorization.

401408831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4825.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 401408831 is about 20035.1898169196. The cubic root of 401408831 is about 737.6703157735.

The spelling of 401408831 in words is "four hundred one million, four hundred eight thousand, eight hundred thirty-one".