39966763 has 4 divisors (see below), whose sum is σ = 39984840. Its totient is φ = 39948688.

The previous prime is 39966757. The next prime is 39966767. The reversal of 39966763 is 36766993.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39966763 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39966767) 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, 5170 + ... + 10327.

It is an arithmetic number, because the mean of its divisors is an integer number (9996210).

Almost surely, 2^39966763 is an apocalyptic number.

39966763 is a deficient number, since it is larger than the sum of its proper divisors (18077).

39966763 is a wasteful number, since it uses less digits than its factorization.

39966763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18076.

The product of its digits is 1102248, while the sum is 49.

The square root of 39966763 is about 6321.9271587072. The cubic root of 39966763 is about 341.9004389694.

The spelling of 39966763 in words is "thirty-nine million, nine hundred sixty-six thousand, seven hundred sixty-three".