401915 has 8 divisors (see below), whose sum is σ = 498048. Its totient is φ = 311040.

The previous prime is 401909. The next prime is 401917. The reversal of 401915 is 519104.

401915 = 48² + 49² + ... + 109².

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

It is not a de Polignac number, because 401915 - 2¹⁴ = 385531 is a prime.

It is a Duffinian number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1142 + ... + 1451.

It is an arithmetic number, because the mean of its divisors is an integer number (62256).

2⁴⁰¹⁹¹⁵ is an apocalyptic number.

401915 is a deficient number, since it is larger than the sum of its proper divisors (96133).

401915 is a wasteful number, since it uses less digits than its factorization.

401915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 401915 is about 633.9676647906. The cubic root of 401915 is about 73.7980248343.

The spelling of 401915 in words is "four hundred one thousand, nine hundred fifteen".