39945148 has 6 divisors (see below), whose sum is σ = 69904016. Its totient is φ = 19972572.

The previous prime is 39945119. The next prime is 39945173. The reversal of 39945148 is 84154993.

It is a happy number.

It is a super-2 number, since 2×39945148² = 3191229697483808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993140 + ... + 4993147.

Almost surely, 2^39945148 is an apocalyptic number.

It is an amenable number.

39945148 is a deficient number, since it is larger than the sum of its proper divisors (29958868).

39945148 is a wasteful number, since it uses less digits than its factorization.

39945148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9986291 (or 9986289 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 39945148 is about 6320.2174013241. The cubic root of 39945148 is about 341.8387918232.

The spelling of 39945148 in words is "thirty-nine million, nine hundred forty-five thousand, one hundred forty-eight".