39975378 has 8 divisors (see below), whose sum is σ = 79950768. Its totient is φ = 13325124.

The previous prime is 39975371. The next prime is 39975401. The reversal of 39975378 is 87357993.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

39975378 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 39975378.

It is not an unprimeable number, because it can be changed into a prime (39975371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3331276 + ... + 3331287.

It is an arithmetic number, because the mean of its divisors is an integer number (9993846).

Almost surely, 2^39975378 is an apocalyptic number.

39975378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

39975378 is a wasteful number, since it uses less digits than its factorization.

39975378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6662568.

The product of its digits is 1428840, while the sum is 51.

The square root of 39975378 is about 6322.6084806826. The cubic root of 39975378 is about 341.9250032194.

The spelling of 39975378 in words is "thirty-nine million, nine hundred seventy-five thousand, three hundred seventy-eight".