3937272820 has 24 divisors (see below), whose sum is σ = 8904294504. Its totient is φ = 1453762176.

The previous prime is 3937272791. The next prime is 3937272881. The reversal of 3937272820 is 282727393.

It can be written as a sum of positive squares in 4 ways, for example, as 364580836 + 3572691984 = 19094^2 + 59772^2 .

It is a super-2 number, since 2×3937272820² = 31004234518221504800, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 7571419 + ... + 7571938.

It is an arithmetic number, because the mean of its divisors is an integer number (371012271).

Almost surely, 2^3937272820 is an apocalyptic number.

It is an amenable number.

3937272820 is an abundant number, since it is smaller than the sum of its proper divisors (4967021684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3937272820 is a wasteful number, since it uses less digits than its factorization.

3937272820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15143379 (or 15143377 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 3937272820 is about 62747.6917503744. The cubic root of 3937272820 is about 1579.0595295057.

The spelling of 3937272820 in words is "three billion, nine hundred thirty-seven million, two hundred seventy-two thousand, eight hundred twenty".