401641487 has 8 divisors (see below), whose sum is σ = 446490240. Its totient is φ = 358786080.

The previous prime is 401641481. The next prime is 401641517. The reversal of 401641487 is 784146104.

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

It is a cyclic number.

It is not a de Polignac number, because 401641487 - 2⁶ = 401641423 is a prime.

It is a super-2 number, since 2×401641487² = 322631768159142338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401641481) 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, 497912 + ... + 498717.

It is an arithmetic number, because the mean of its divisors is an integer number (55811280).

Almost surely, 2^401641487 is an apocalyptic number.

401641487 is a deficient number, since it is larger than the sum of its proper divisors (44848753).

401641487 is a wasteful number, since it uses less digits than its factorization.

401641487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996673.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 401641487 is about 20040.9951599216. The cubic root of 401641487 is about 737.8128058110.

The spelling of 401641487 in words is "four hundred one million, six hundred forty-one thousand, four hundred eighty-seven".