39768449 has 24 divisors (see below), whose sum is σ = 49084800. Its totient is φ = 32145960.

The previous prime is 39768427. The next prime is 39768461. The reversal of 39768449 is 94486793.

It is not a de Polignac number, because 39768449 - 2¹² = 39764353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39768397 and 39768406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39768409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 560084 + ... + 560154.

It is an arithmetic number, because the mean of its divisors is an integer number (2045200).

Almost surely, 2^39768449 is an apocalyptic number.

It is an amenable number.

39768449 is a deficient number, since it is larger than the sum of its proper divisors (9316351).

39768449 is an frugal number, since it uses more digits than its factorization.

39768449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 101 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 50.

The square root of 39768449 is about 6306.2230376034. The cubic root of 39768449 is about 341.3340007981.

The spelling of 39768449 in words is "thirty-nine million, seven hundred sixty-eight thousand, four hundred forty-nine".