39630977 has 4 divisors (see below), whose sum is σ = 39644160. Its totient is φ = 39617796.

The previous prime is 39630971. The next prime is 39630991. The reversal of 39630977 is 77903693.

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 39630977 - 2¹⁶ = 39565441 is a prime.

It is a super-2 number, since 2×39630977² = 3141228675949058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39630971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368 + ... + 8910.

It is an arithmetic number, because the mean of its divisors is an integer number (9911040).

Almost surely, 2^39630977 is an apocalyptic number.

It is an amenable number.

39630977 is a deficient number, since it is larger than the sum of its proper divisors (13183).

39630977 is an equidigital number, since it uses as much as digits as its factorization.

39630977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13182.

The product of its (nonzero) digits is 214326, while the sum is 44.

The square root of 39630977 is about 6295.3138920947. The cubic root of 39630977 is about 340.9402377188.

The spelling of 39630977 in words is "thirty-nine million, six hundred thirty thousand, nine hundred seventy-seven".