3970213249 has 4 divisors (see below), whose sum is σ = 3982979520. Its totient is φ = 3957446980.

The previous prime is 3970213237. The next prime is 3970213271. The reversal of 3970213249 is 9423120793.

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 a de Polignac number, because none of the positive numbers 2^k-3970213249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3970216249) 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, 6382669 + ... + 6383290.

It is an arithmetic number, because the mean of its divisors is an integer number (995744880).

Almost surely, 2^3970213249 is an apocalyptic number.

It is an amenable number.

3970213249 is a deficient number, since it is larger than the sum of its proper divisors (12766271).

3970213249 is a wasteful number, since it uses less digits than its factorization.

3970213249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12766270.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 3970213249 is about 63009.6282245817. The cubic root of 3970213249 is about 1583.4509372689.

The spelling of 3970213249 in words is "three billion, nine hundred seventy million, two hundred thirteen thousand, two hundred forty-nine".