401435406 has 16 divisors (see below), whose sum is σ = 892078800. Its totient is φ = 133811784.

The previous prime is 401435389. The next prime is 401435407. The reversal of 401435406 is 604534104.

It is a super-2 number, since 2×401435406² = 322300770380769672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 401435406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401435407) 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, 3716941 + ... + 3717048.

It is an arithmetic number, because the mean of its divisors is an integer number (55754925).

Almost surely, 2^401435406 is an apocalyptic number.

401435406 is an abundant number, since it is smaller than the sum of its proper divisors (490643394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401435406 is a wasteful number, since it uses less digits than its factorization.

401435406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7434000 (or 7433994 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 401435406 is about 20035.8530140346. The cubic root of 401435406 is about 737.6865944023.

The spelling of 401435406 in words is "four hundred one million, four hundred thirty-five thousand, four hundred six".