3997870273 has 2 divisors, whose sum is σ = 3997870274. Its totient is φ = 3997870272.

The previous prime is 3997870181. The next prime is 3997870291. The reversal of 3997870273 is 3720787993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2469294864 + 1528575409 = 49692^2 + 39097^2 .

It is a cyclic number.

It is not a de Polignac number, because 3997870273 - 2⁹ = 3997869761 is a prime.

It is not a weakly prime, because it can be changed into another prime (3997870073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998935136 + 1998935137.

It is an arithmetic number, because the mean of its divisors is an integer number (1998935137).

Almost surely, 2^3997870273 is an apocalyptic number.

It is an amenable number.

3997870273 is a deficient number, since it is larger than the sum of its proper divisors (1).

3997870273 is an equidigital number, since it uses as much as digits as its factorization.

3997870273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000752, while the sum is 55.

The square root of 3997870273 is about 63228.7139913505. The cubic root of 3997870273 is about 1587.1192743798.

The spelling of 3997870273 in words is "three billion, nine hundred ninety-seven million, eight hundred seventy thousand, two hundred seventy-three".