401518971 has 48 divisors (see below), whose sum is σ = 722260480. Its totient is φ = 215913600.

The previous prime is 401518969. The next prime is 401519023. The reversal of 401518971 is 179815104.

401518971 is a `hidden beast` number, since 401 + 5 + 189 + 71 = 666.

It is not a de Polignac number, because 401518971 - 2¹ = 401518969 is a prime.

It is a super-2 number, since 2×401518971² = 322434968145797682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401518921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50946 + ... + 58296.

Almost surely, 2^401518971 is an apocalyptic number.

401518971 is a deficient number, since it is larger than the sum of its proper divisors (320741509).

401518971 is a wasteful number, since it uses less digits than its factorization.

401518971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7401 (or 7378 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 401518971 is about 20037.9382921497. The cubic root of 401518971 is about 737.7377778159.

The spelling of 401518971 in words is "four hundred one million, five hundred eighteen thousand, nine hundred seventy-one".