401438 has 8 divisors (see below), whose sum is σ = 637632. Its totient is φ = 188896.

The previous prime is 401417. The next prime is 401473. The reversal of 401438 is 834104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×401438² = 322304935688, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5870 + ... + 5937.

It is an arithmetic number, because the mean of its divisors is an integer number (79704).

2⁴⁰¹⁴³⁸ is an apocalyptic number.

401438 is a deficient number, since it is larger than the sum of its proper divisors (236194).

401438 is a wasteful number, since it uses less digits than its factorization.

401438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11826.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 401438 is about 633.5913509511. The cubic root of 401438 is about 73.7688183329.

The spelling of 401438 in words is "four hundred one thousand, four hundred thirty-eight".