3949297237 has 2 divisors, whose sum is σ = 3949297238. Its totient is φ = 3949297236.

The previous prime is 3949297211. The next prime is 3949297273. The reversal of 3949297237 is 7327929493.

It is a happy number.

Together with next prime (3949297273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2722126276 + 1227170961 = 52174^2 + 35031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3949297237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3949295237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1974648618 + 1974648619.

It is an arithmetic number, because the mean of its divisors is an integer number (1974648619).

Almost surely, 2^3949297237 is an apocalyptic number.

It is an amenable number.

3949297237 is a deficient number, since it is larger than the sum of its proper divisors (1).

3949297237 is an equidigital number, since it uses as much as digits as its factorization.

3949297237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5143824, while the sum is 55.

The square root of 3949297237 is about 62843.4343189485. The cubic root of 3949297237 is about 1580.6653765668.

The spelling of 3949297237 in words is "three billion, nine hundred forty-nine million, two hundred ninety-seven thousand, two hundred thirty-seven".