401545406 has 16 divisors (see below), whose sum is σ = 646488864. Its totient is φ = 186372864.

The previous prime is 401545369. The next prime is 401545421. The reversal of 401545406 is 604545104.

It is a super-2 number, since 2×401545406² = 322477426159409672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 78410 + ... + 83373.

It is an arithmetic number, because the mean of its divisors is an integer number (40405554).

Almost surely, 2^401545406 is an apocalyptic number.

401545406 is a deficient number, since it is larger than the sum of its proper divisors (244943458).

401545406 is a wasteful number, since it uses less digits than its factorization.

401545406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161875.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 401545406 is about 20038.5979050432. The cubic root of 401545406 is about 737.7539677277.

The spelling of 401545406 in words is "four hundred one million, five hundred forty-five thousand, four hundred six".