401921259 has 24 divisors (see below), whose sum is σ = 574630320. Its totient is φ = 249813504.

The previous prime is 401921257. The next prime is 401921279. The reversal of 401921259 is 952129104.

It is not a de Polignac number, because 401921259 - 2¹ = 401921257 is a prime.

It is a super-2 number, since 2×401921259² = 323081396872290162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401921257) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 92377 + ... + 96629.

It is an arithmetic number, because the mean of its divisors is an integer number (23942930).

Almost surely, 2^401921259 is an apocalyptic number.

401921259 is a deficient number, since it is larger than the sum of its proper divisors (172709061).

401921259 is a wasteful number, since it uses less digits than its factorization.

401921259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4399 (or 4382 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 401921259 is about 20047.9739375329. The cubic root of 401921259 is about 737.9840791654.

The spelling of 401921259 in words is "four hundred one million, nine hundred twenty-one thousand, two hundred fifty-nine".