431986401 has 36 divisors (see below), whose sum is σ = 791850384. Its totient is φ = 224406000.

The previous prime is 431986381. The next prime is 431986403. The reversal of 431986401 is 104689134.

431986401 is a `hidden beast` number, since 4 + 3 + 1 + 9 + 8 + 640 + 1 = 666.

It is not a de Polignac number, because 431986401 - 2¹⁰ = 431985377 is a prime.

It is a super-2 number, since 2×431986401² = 373224501297865602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (431986403) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 39675 + ... + 49376.

It is an arithmetic number, because the mean of its divisors is an integer number (21995844).

Almost surely, 2^431986401 is an apocalyptic number.

It is an amenable number.

431986401 is a deficient number, since it is larger than the sum of its proper divisors (359863983).

431986401 is a wasteful number, since it uses less digits than its factorization.

431986401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89082 (or 89072 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 431986401 is about 20784.2825471557. The cubic root of 431986401 is about 755.9446976007.

The spelling of 431986401 in words is "four hundred thirty-one million, nine hundred eighty-six thousand, four hundred one".