3973237121 has 4 divisors (see below), whose sum is σ = 4540842432. Its totient is φ = 3405631812.

The previous prime is 3973237091. The next prime is 3973237123. The reversal of 3973237121 is 1217323793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3973237121 - 2³⁰ = 2899495297 is a prime.

It is a super-2 number, since 2×3973237121² = 31573226439384737282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3973237123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283802645 + ... + 283802658.

It is an arithmetic number, because the mean of its divisors is an integer number (1135210608).

Almost surely, 2^3973237121 is an apocalyptic number.

It is an amenable number.

3973237121 is a deficient number, since it is larger than the sum of its proper divisors (567605311).

3973237121 is an equidigital number, since it uses as much as digits as its factorization.

3973237121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567605310.

The product of its digits is 47628, while the sum is 38.

The square root of 3973237121 is about 63033.6189743219. The cubic root of 3973237121 is about 1583.8528416127.

The spelling of 3973237121 in words is "three billion, nine hundred seventy-three million, two hundred thirty-seven thousand, one hundred twenty-one".