401913 has 6 divisors (see below), whose sum is σ = 580554. Its totient is φ = 267936.

The previous prime is 401909. The next prime is 401917. The reversal of 401913 is 319104.

It is an interprime number because it is at equal distance from previous prime (401909) and next prime (401917).

It can be written as a sum of positive squares in only one way, i.e., 345744 + 56169 = 588^2 + 237^2 .

It is not a de Polignac number, because 401913 - 2² = 401909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (401917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22320 + ... + 22337.

It is an arithmetic number, because the mean of its divisors is an integer number (96759).

2⁴⁰¹⁹¹³ is an apocalyptic number.

It is an amenable number.

401913 is a deficient number, since it is larger than the sum of its proper divisors (178641).

401913 is a wasteful number, since it uses less digits than its factorization.

401913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44663 (or 44660 counting only the distinct ones).

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

The square root of 401913 is about 633.9660874211. The cubic root of 401913 is about 73.7979024235.

It can be divided in two parts, 40 and 1913, that added together give a triangular number (1953 = T₆₂).

The spelling of 401913 in words is "four hundred one thousand, nine hundred thirteen".