39668880 has 40 divisors (see below), whose sum is σ = 122974272. Its totient is φ = 10578304.

The previous prime is 39668869. The next prime is 39668887. The reversal of 39668880 is 8886693.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (39668887) 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 7 ways as a sum of consecutive naturals, for example, 82404 + ... + 82883.

Almost surely, 2^39668880 is an apocalyptic number.

39668880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39668880 is an abundant number, since it is smaller than the sum of its proper divisors (83305392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39668880 is a wasteful number, since it uses less digits than its factorization.

39668880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165303 (or 165297 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 39668880 is about 6298.3235864792. The cubic root of 39668880 is about 341.0488946438.

The spelling of 39668880 in words is "thirty-nine million, six hundred sixty-eight thousand, eight hundred eighty".