39248749 has 4 divisors (see below), whose sum is σ = 40309564. Its totient is φ = 38187936.

The previous prime is 39248731. The next prime is 39248753. The reversal of 39248749 is 94784293.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37576900 + 1671849 = 6130^2 + 1293^2 .

It is a cyclic number.

It is not a de Polignac number, because 39248749 - 2⁵ = 39248717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39248699 and 39248708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39240749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530352 + ... + 530425.

It is an arithmetic number, because the mean of its divisors is an integer number (10077391).

Almost surely, 2^39248749 is an apocalyptic number.

It is an amenable number.

39248749 is a deficient number, since it is larger than the sum of its proper divisors (1060815).

39248749 is a wasteful number, since it uses less digits than its factorization.

39248749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060814.

The product of its digits is 435456, while the sum is 46.

The square root of 39248749 is about 6264.8822016060. The cubic root of 39248749 is about 339.8406086803.

It can be divided in two parts, 392 and 48749, that added together give a triangular number (49141 = T₃₁₃).

The spelling of 39248749 in words is "thirty-nine million, two hundred forty-eight thousand, seven hundred forty-nine".