39941387 has 4 divisors (see below), whose sum is σ = 40209600. Its totient is φ = 39673176.

The previous prime is 39941371. The next prime is 39941411. The reversal of 39941387 is 78314993.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78314993 = 29 ⋅2700517.

It is a cyclic number.

It is not a de Polignac number, because 39941387 - 2⁴ = 39941371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39941327) 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, 133883 + ... + 134180.

It is an arithmetic number, because the mean of its divisors is an integer number (10052400).

Almost surely, 2^39941387 is an apocalyptic number.

39941387 is a deficient number, since it is larger than the sum of its proper divisors (268213).

39941387 is a wasteful number, since it uses less digits than its factorization.

39941387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268212.

The product of its digits is 163296, while the sum is 44.

The square root of 39941387 is about 6319.9198570868. The cubic root of 39941387 is about 341.8280629770.

The spelling of 39941387 in words is "thirty-nine million, nine hundred forty-one thousand, three hundred eighty-seven".