401892291 has 24 divisors (see below), whose sum is σ = 629660304. Its totient is φ = 246013440.

The previous prime is 401892289. The next prime is 401892349. The reversal of 401892291 is 192298104.

It is not a de Polignac number, because 401892291 - 2¹ = 401892289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (401892251) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 25761 + ... + 38306.

It is an arithmetic number, because the mean of its divisors is an integer number (26235846).

Almost surely, 2^401892291 is an apocalyptic number.

401892291 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

401892291 is a deficient number, since it is larger than the sum of its proper divisors (227768013).

401892291 is a wasteful number, since it uses less digits than its factorization.

401892291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64131 (or 64128 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 401892291 is about 20047.2514574941. The cubic root of 401892291 is about 737.9663489625.

The spelling of 401892291 in words is "four hundred one million, eight hundred ninety-two thousand, two hundred ninety-one".