39891948 has 12 divisors (see below), whose sum is σ = 93081240. Its totient is φ = 13297312.

The previous prime is 39891941. The next prime is 39891949. The reversal of 39891948 is 84919893.

It is a happy number.

39891948 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 39891948.

It is not an unprimeable number, because it can be changed into a prime (39891941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1662153 + ... + 1662176.

It is an arithmetic number, because the mean of its divisors is an integer number (7756770).

Almost surely, 2^39891948 is an apocalyptic number.

It is an amenable number.

39891948 is an abundant number, since it is smaller than the sum of its proper divisors (53189292).

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

39891948 is a wasteful number, since it uses less digits than its factorization.

39891948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324336 (or 3324334 counting only the distinct ones).

The product of its digits is 559872, while the sum is 51.

The square root of 39891948 is about 6316.0072830864. The cubic root of 39891948 is about 341.6869677672.

The spelling of 39891948 in words is "thirty-nine million, eight hundred ninety-one thousand, nine hundred forty-eight".