431863869 has 16 divisors (see below), whose sum is σ = 612323712. Its totient is φ = 269803008.

The previous prime is 431863841. The next prime is 431863897. The reversal of 431863869 is 968368134.

It is an interprime number because it is at equal distance from previous prime (431863841) and next prime (431863897).

It is not a de Polignac number, because 431863869 - 2⁸ = 431863613 is a prime.

It is a super-2 number, since 2×431863869² = 373012802695298322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431863829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6289 + ... + 30054.

It is an arithmetic number, because the mean of its divisors is an integer number (38270232).

Almost surely, 2^431863869 is an apocalyptic number.

It is an amenable number.

431863869 is a deficient number, since it is larger than the sum of its proper divisors (180459843).

431863869 is a wasteful number, since it uses less digits than its factorization.

431863869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36596.

The product of its digits is 746496, while the sum is 48.

The square root of 431863869 is about 20781.3346299029. The cubic root of 431863869 is about 755.8732168206.

The spelling of 431863869 in words is "four hundred thirty-one million, eight hundred sixty-three thousand, eight hundred sixty-nine".