401906477 has 16 divisors (see below), whose sum is σ = 480144000. Its totient is φ = 336077280.

The previous prime is 401906443. The next prime is 401906497. The reversal of 401906477 is 774609104.

It is a de Polignac number, because none of the positive numbers 2^k-401906477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 401906477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401906437) 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, 227 + ... + 28352.

It is an arithmetic number, because the mean of its divisors is an integer number (30009000).

Almost surely, 2^401906477 is an apocalyptic number.

It is an amenable number.

401906477 is a deficient number, since it is larger than the sum of its proper divisors (78237523).

401906477 is an equidigital number, since it uses as much as digits as its factorization.

401906477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28641 (or 28627 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 401906477 is about 20047.6052684604. The cubic root of 401906477 is about 737.9750317760.

The spelling of 401906477 in words is "four hundred one million, nine hundred six thousand, four hundred seventy-seven".