401191490 has 32 divisors (see below), whose sum is σ = 826398720. Its totient is φ = 137369664.

The previous prime is 401191477. The next prime is 401191499. The reversal of 401191490 is 94191104.

It is a super-2 number, since 2×401191490² = 321909223296840200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401191499) 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, 56351 + ... + 63069.

It is an arithmetic number, because the mean of its divisors is an integer number (25824960).

Almost surely, 2^401191490 is an apocalyptic number.

401191490 is an abundant number, since it is smaller than the sum of its proper divisors (425207230).

401191490 is a wasteful number, since it uses less digits than its factorization.

401191490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7586.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 401191490 is about 20029.7651009691. The cubic root of 401191490 is about 737.5371556498.

The spelling of 401191490 in words is "four hundred one million, one hundred ninety-one thousand, four hundred ninety".