4891431 has 16 divisors (see below), whose sum is σ = 6741504. Its totient is φ = 3153024.

The previous prime is 4891429. The next prime is 4891457. The reversal of 4891431 is 1341984.

It is a happy number.

It is not a de Polignac number, because 4891431 - 2¹ = 4891429 is a prime.

It is a super-2 number, since 2×4891431² = 47852194455522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15780 + ... + 16086.

It is an arithmetic number, because the mean of its divisors is an integer number (421344).

Almost surely, 2^4891431 is an apocalyptic number.

4891431 is a deficient number, since it is larger than the sum of its proper divisors (1850073).

4891431 is a wasteful number, since it uses less digits than its factorization.

4891431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470.

The product of its digits is 3456, while the sum is 30.

The square root of 4891431 is about 2211.6579753660. The cubic root of 4891431 is about 169.7508576562.

The spelling of 4891431 in words is "four million, eight hundred ninety-one thousand, four hundred thirty-one".