401872289 has 16 divisors (see below), whose sum is σ = 500881920. Its totient is φ = 313934400.

The previous prime is 401872277. The next prime is 401872301. The reversal of 401872289 is 982278104.

It is an interprime number because it is at equal distance from previous prime (401872277) and next prime (401872301).

It is not a de Polignac number, because 401872289 - 2⁸ = 401872033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (401872789) 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, 20762 + ... + 35139.

It is an arithmetic number, because the mean of its divisors is an integer number (31305120).

Almost surely, 2^401872289 is an apocalyptic number.

It is an amenable number.

401872289 is a deficient number, since it is larger than the sum of its proper divisors (99009631).

401872289 is a wasteful number, since it uses less digits than its factorization.

401872289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56000.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 401872289 is about 20046.7525799068. The cubic root of 401872289 is about 737.9541060074.

The spelling of 401872289 in words is "four hundred one million, eight hundred seventy-two thousand, two hundred eighty-nine".