401487 has 8 divisors (see below), whose sum is σ = 549936. Its totient is φ = 260352.

The previous prime is 401477. The next prime is 401507. The reversal of 401487 is 784104.

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

It is not a de Polignac number, because 401487 - 2⁸ = 401231 is a prime.

It is a super-2 number, since 2×401487² = 322383622338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1698 + ... + 1919.

It is an arithmetic number, because the mean of its divisors is an integer number (68742).

2⁴⁰¹⁴⁸⁷ is an apocalyptic number.

401487 is a deficient number, since it is larger than the sum of its proper divisors (148449).

401487 is a wasteful number, since it uses less digits than its factorization.

401487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 401487 is about 633.6300182283. The cubic root of 401487 is about 73.7718196474.

It can be divided in two parts, 401 and 487, that added together give a palindrome (888).

The spelling of 401487 in words is "four hundred one thousand, four hundred eighty-seven".