746849509 has 4 divisors (see below), whose sum is σ = 853542304. Its totient is φ = 640156716.

The previous prime is 746849479. The next prime is 746849527. The reversal of 746849509 is 905948647.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 746849509 - 2⁹ = 746848997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (746849539) 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 3 ways as a sum of consecutive naturals, for example, 53346387 + ... + 53346400.

It is an arithmetic number, because the mean of its divisors is an integer number (213385576).

Almost surely, 2^746849509 is an apocalyptic number.

It is an amenable number.

746849509 is a deficient number, since it is larger than the sum of its proper divisors (106692795).

746849509 is a wasteful number, since it uses less digits than its factorization.

746849509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106692794.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 746849509 is about 27328.5475098842. The cubic root of 746849509 is about 907.2863282309.

The spelling of 746849509 in words is "seven hundred forty-six million, eight hundred forty-nine thousand, five hundred nine".