39906274 has 4 divisors (see below), whose sum is σ = 59859414. Its totient is φ = 19953136.

The previous prime is 39906271. The next prime is 39906283. The reversal of 39906274 is 47260993.

39906274 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38975049 + 931225 = 6243^2 + 965^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (39906271) 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 as a sum of consecutive naturals, namely, 9976567 + ... + 9976570.

Almost surely, 2^39906274 is an apocalyptic number.

39906274 is a deficient number, since it is larger than the sum of its proper divisors (19953140).

39906274 is a wasteful number, since it uses less digits than its factorization.

39906274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19953139.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 39906274 is about 6317.1412838403. The cubic root of 39906274 is about 341.7278650903.

The spelling of 39906274 in words is "thirty-nine million, nine hundred six thousand, two hundred seventy-four".