401139 has 16 divisors (see below), whose sum is σ = 604800. Its totient is φ = 262728.

The previous prime is 401119. The next prime is 401161. The reversal of 401139 is 931104.

It is a de Polignac number, because none of the positive numbers 2^k-401139 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (401119) 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, 2152 + ... + 2330.

It is an arithmetic number, because the mean of its divisors is an integer number (37800).

2⁴⁰¹¹³⁹ is an apocalyptic number.

401139 is a deficient number, since it is larger than the sum of its proper divisors (203661).

401139 is a wasteful number, since it uses less digits than its factorization.

401139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 401139 is about 633.3553504945. The cubic root of 401139 is about 73.7504988954.

The spelling of 401139 in words is "four hundred one thousand, one hundred thirty-nine".