7021937249 has 2 divisors, whose sum is σ = 7021937250. Its totient is φ = 7021937248.

The previous prime is 7021937189. The next prime is 7021937257. The reversal of 7021937249 is 9427391207.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4652194849 + 2369742400 = 68207^2 + 48680^2 .

It is a cyclic number.

It is not a de Polignac number, because 7021937249 - 2¹⁶ = 7021871713 is a prime.

It is not a weakly prime, because it can be changed into another prime (7021937269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3510968624 + 3510968625.

It is an arithmetic number, because the mean of its divisors is an integer number (3510968625).

Almost surely, 2^7021937249 is an apocalyptic number.

It is an amenable number.

7021937249 is a deficient number, since it is larger than the sum of its proper divisors (1).

7021937249 is an equidigital number, since it uses as much as digits as its factorization.

7021937249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 7021937249 is about 83797.0002386720. Note that the first 3 decimals coincide. The cubic root of 7021937249 is about 1914.9274059382.

The spelling of 7021937249 in words is "seven billion, twenty-one million, nine hundred thirty-seven thousand, two hundred forty-nine".