239040749 has 4 divisors (see below), whose sum is σ = 239072064. Its totient is φ = 239009436.

The previous prime is 239040733. The next prime is 239040773. The reversal of 239040749 is 947040932.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 239040749 - 2⁴ = 239040733 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 (239040719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4124 + ... + 22250.

It is an arithmetic number, because the mean of its divisors is an integer number (59768016).

Almost surely, 2^239040749 is an apocalyptic number.

It is an amenable number.

239040749 is a deficient number, since it is larger than the sum of its proper divisors (31315).

239040749 is a wasteful number, since it uses less digits than its factorization.

239040749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31314.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 239040749 is about 15460.9426944155. The cubic root of 239040749 is about 620.6174468064.

The spelling of 239040749 in words is "two hundred thirty-nine million, forty thousand, seven hundred forty-nine".