401644190 has 16 divisors (see below), whose sum is σ = 724098960. Its totient is φ = 160404480.

The previous prime is 401644189. The next prime is 401644223. The reversal of 401644190 is 91446104.

It is a happy number.

It is a super-2 number, since 2×401644190² = 322636110721512200, 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24920 + ... + 37739.

It is an arithmetic number, because the mean of its divisors is an integer number (45256185).

Almost surely, 2^401644190 is an apocalyptic number.

401644190 is a deficient number, since it is larger than the sum of its proper divisors (322454770).

401644190 is a wasteful number, since it uses less digits than its factorization.

401644190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63307.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 401644190 is about 20041.0625965791. The cubic root of 401644190 is about 737.8144609384.

The spelling of 401644190 in words is "four hundred one million, six hundred forty-four thousand, one hundred ninety".