749431 has 2 divisors, whose sum is σ = 749432. Its totient is φ = 749430.

The previous prime is 749429. The next prime is 749443. The reversal of 749431 is 134947.

It is a weak prime.

It is an emirp because it is prime and its reverse (134947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 749431 - 2¹ = 749429 is a prime.

It is a super-2 number, since 2×749431² = 1123293647522, which contains 22 as substring.

Together with 749429, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 749431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (749401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374715 + 374716.

It is an arithmetic number, because the mean of its divisors is an integer number (374716).

2⁷⁴⁹⁴³¹ is an apocalyptic number.

749431 is a deficient number, since it is larger than the sum of its proper divisors (1).

749431 is an equidigital number, since it uses as much as digits as its factorization.

749431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 749431 is about 865.6968291498. The cubic root of 749431 is about 90.8330473483.

The spelling of 749431 in words is "seven hundred forty-nine thousand, four hundred thirty-one".