39970144 has 48 divisors (see below), whose sum is σ = 80967600. Its totient is φ = 19417600.

The previous prime is 39970141. The next prime is 39970157. The reversal of 39970144 is 44107993.

It is a super-2 number, since 2×39970144² = 3195224822761472, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39970141) 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, 268182 + ... + 268330.

It is an arithmetic number, because the mean of its divisors is an integer number (1686825).

Almost surely, 2^39970144 is an apocalyptic number.

It is an amenable number.

39970144 is an abundant number, since it is smaller than the sum of its proper divisors (40997456).

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

39970144 is a wasteful number, since it uses less digits than its factorization.

39970144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 39970144 is about 6322.1945556903. The cubic root of 39970144 is about 341.9100797535.

The spelling of 39970144 in words is "thirty-nine million, nine hundred seventy thousand, one hundred forty-four".