39340749 has 16 divisors (see below), whose sum is σ = 60088320. Its totient is φ = 22427760.

The previous prime is 39340723. The next prime is 39340781. The reversal of 39340749 is 94704393.

It is not a de Polignac number, because 39340749 - 2⁸ = 39340493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39340709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8104 + ... + 12014.

It is an arithmetic number, because the mean of its divisors is an integer number (3755520).

Almost surely, 2^39340749 is an apocalyptic number.

39340749 is the 3353-rd nonagonal number.

It is an amenable number.

39340749 is a deficient number, since it is larger than the sum of its proper divisors (20747571).

39340749 is a wasteful number, since it uses less digits than its factorization.

39340749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 39340749 is about 6272.2204202340. The cubic root of 39340749 is about 340.1059329659.

The spelling of 39340749 in words is "thirty-nine million, three hundred forty thousand, seven hundred forty-nine".