3922947145 has 12 divisors (see below), whose sum is σ = 5097511116. Its totient is φ = 2896944960.

The previous prime is 3922947113. The next prime is 3922947179. The reversal of 3922947145 is 5417492293.

It can be written as a sum of positive squares in 6 ways, for example, as 943534089 + 2979413056 = 30717^2 + 54584^2 .

It is not a de Polignac number, because 3922947145 - 2⁵ = 3922947113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3922947095 and 3922947104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2320426 + ... + 2322115.

It is an arithmetic number, because the mean of its divisors is an integer number (424792593).

Almost surely, 2^3922947145 is an apocalyptic number.

It is an amenable number.

3922947145 is a deficient number, since it is larger than the sum of its proper divisors (1174563971).

3922947145 is a wasteful number, since it uses less digits than its factorization.

3922947145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642572 (or 4642559 counting only the distinct ones).

The product of its digits is 544320, while the sum is 46.

The square root of 3922947145 is about 62633.4347214010. The cubic root of 3922947145 is about 1577.1420783754.

The spelling of 3922947145 in words is "three billion, nine hundred twenty-two million, nine hundred forty-seven thousand, one hundred forty-five".