3219944957 has 4 divisors (see below), whose sum is σ = 3224922336. Its totient is φ = 3214967580.

The previous prime is 3219944951. The next prime is 3219944969. The reversal of 3219944957 is 7594499123.

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 3219944957 - 2⁴ = 3219944941 is a prime.

It is a super-2 number, since 2×3219944957² = 20736091052219463698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3219944899 and 3219944908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3219944951) 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, 2487719 + ... + 2489012.

It is an arithmetic number, because the mean of its divisors is an integer number (806230584).

Almost surely, 2^3219944957 is an apocalyptic number.

It is an amenable number.

3219944957 is a deficient number, since it is larger than the sum of its proper divisors (4977379).

3219944957 is an equidigital number, since it uses as much as digits as its factorization.

3219944957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4977378.

The product of its digits is 2449440, while the sum is 53.

The square root of 3219944957 is about 56744.5588316624. The cubic root of 3219944957 is about 1476.6678377347.

The spelling of 3219944957 in words is "three billion, two hundred nineteen million, nine hundred forty-four thousand, nine hundred fifty-seven".