39459749 has 16 divisors (see below), whose sum is σ = 47616000. Its totient is φ = 32648112.

The previous prime is 39459709. The next prime is 39459757. The reversal of 39459749 is 94795493.

39459749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-39459749 is a prime.

It is a super-2 number, since 2×39459749² = 3114143582286002, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39459697 and 39459706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39459709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7964 + ... + 11930.

It is an arithmetic number, because the mean of its divisors is an integer number (2976000).

Almost surely, 2^39459749 is an apocalyptic number.

It is an amenable number.

39459749 is a deficient number, since it is larger than the sum of its proper divisors (8156251).

39459749 is an equidigital number, since it uses as much as digits as its factorization.

39459749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4017 (or 4003 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 50.

The square root of 39459749 is about 6281.6995311778. The cubic root of 39459749 is about 340.4485113152.

The spelling of 39459749 in words is "thirty-nine million, four hundred fifty-nine thousand, seven hundred forty-nine".