39249429447 has 16 divisors (see below), whose sum is σ = 53604258048. Its totient is φ = 25531685760.

The previous prime is 39249429403. The next prime is 39249429463. The reversal of 39249429447 is 74492494293.

39249429447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39249429447 - 2¹⁸ = 39249167303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39249422447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27954 + ... + 281567.

It is an arithmetic number, because the mean of its divisors is an integer number (3350266128).

Almost surely, 2^39249429447 is an apocalyptic number.

39249429447 is a deficient number, since it is larger than the sum of its proper divisors (14354828601).

39249429447 is a wasteful number, since it uses less digits than its factorization.

39249429447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310550.

The product of its digits is 15676416, while the sum is 57.

The spelling of 39249429447 in words is "thirty-nine billion, two hundred forty-nine million, four hundred twenty-nine thousand, four hundred forty-seven".