39806963 has 6 divisors (see below), whose sum is σ = 46306116. Its totient is φ = 34120212.

The previous prime is 39806939. The next prime is 39806969. The reversal of 39806963 is 36960893.

It is not a de Polignac number, because 39806963 - 2²² = 35612659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39806969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 406145 + ... + 406242.

It is an arithmetic number, because the mean of its divisors is an integer number (7717686).

Almost surely, 2^39806963 is an apocalyptic number.

39806963 is a deficient number, since it is larger than the sum of its proper divisors (6499153).

39806963 is an equidigital number, since it uses as much as digits as its factorization.

39806963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812401 (or 812394 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 39806963 is about 6309.2759489501. The cubic root of 39806963 is about 341.4441542531. Note that the first 3 decimals are identical.

The spelling of 39806963 in words is "thirty-nine million, eight hundred six thousand, nine hundred sixty-three".