4989431 has 2 divisors, whose sum is σ = 4989432. Its totient is φ = 4989430.

The previous prime is 4989427. The next prime is 4989437. The reversal of 4989431 is 1349894.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4989431 - 2² = 4989427 is a prime.

It is a super-2 number, since 2×4989431² = 49788843407522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4989437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2494715 + 2494716.

It is an arithmetic number, because the mean of its divisors is an integer number (2494716).

Almost surely, 2^4989431 is an apocalyptic number.

4989431 is a deficient number, since it is larger than the sum of its proper divisors (1).

4989431 is an equidigital number, since it uses as much as digits as its factorization.

4989431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 4989431 is about 2233.7034270467. The cubic root of 4989431 is about 170.8770247690.

The spelling of 4989431 in words is "four million, nine hundred eighty-nine thousand, four hundred thirty-one".