3900872242 has 8 divisors (see below), whose sum is σ = 5856889500. Its totient is φ = 1948575744.

The previous prime is 3900872233. The next prime is 3900872249. The reversal of 3900872242 is 2422780093.

It can be written as a sum of positive squares in 2 ways, for example, as 3847596841 + 53275401 = 62029^2 + 7299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×3900872242² = 30433608496812213128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3900872249) 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 in 3 ways as a sum of consecutive naturals, for example, 927567 + ... + 931762.

Almost surely, 2^3900872242 is an apocalyptic number.

3900872242 is a deficient number, since it is larger than the sum of its proper divisors (1956017258).

3900872242 is a wasteful number, since it uses less digits than its factorization.

3900872242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860380.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 3900872242 is about 62456.9631186147. The cubic root of 3900872242 is about 1574.1782550673.

The spelling of 3900872242 in words is "three billion, nine hundred million, eight hundred seventy-two thousand, two hundred forty-two".