39498749 has 4 divisors (see below), whose sum is σ = 39882336. Its totient is φ = 39115164.

The previous prime is 39498737. The next prime is 39498757. The reversal of 39498749 is 94789493.

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 a de Polignac number, because none of the positive numbers 2^k-39498749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39498749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39492749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191639 + ... + 191844.

It is an arithmetic number, because the mean of its divisors is an integer number (9970584).

Almost surely, 2^39498749 is an apocalyptic number.

It is an amenable number.

39498749 is a deficient number, since it is larger than the sum of its proper divisors (383587).

39498749 is a wasteful number, since it uses less digits than its factorization.

39498749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383586.

The product of its digits is 1959552, while the sum is 53.

The square root of 39498749 is about 6284.8030199840. The cubic root of 39498749 is about 340.5606350229.

The spelling of 39498749 in words is "thirty-nine million, four hundred ninety-eight thousand, seven hundred forty-nine".