39789147 has 16 divisors (see below), whose sum is σ = 55617408. Its totient is φ = 25273920.

The previous prime is 39789143. The next prime is 39789157. The reversal of 39789147 is 74198793.

It is not a de Polignac number, because 39789147 - 2² = 39789143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39789096 and 39789105.

It is not an unprimeable number, because it can be changed into a prime (39789143) 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, 1528 + ... + 9050.

It is an arithmetic number, because the mean of its divisors is an integer number (3476088).

Almost surely, 2^39789147 is an apocalyptic number.

39789147 is a deficient number, since it is larger than the sum of its proper divisors (15828261).

39789147 is a wasteful number, since it uses less digits than its factorization.

39789147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7610.

The product of its digits is 381024, while the sum is 48.

The square root of 39789147 is about 6307.8639015121. The cubic root of 39789147 is about 341.3932077490.

The spelling of 39789147 in words is "thirty-nine million, seven hundred eighty-nine thousand, one hundred forty-seven".