2040859397 has 2 divisors, whose sum is σ = 2040859398. Its totient is φ = 2040859396.

The previous prime is 2040859351. The next prime is 2040859409. The reversal of 2040859397 is 7939580402.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1772915236 + 267944161 = 42106^2 + 16369^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040859397 - 2¹⁰ = 2040858373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2040859307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020429698 + 1020429699.

It is an arithmetic number, because the mean of its divisors is an integer number (1020429699).

Almost surely, 2^2040859397 is an apocalyptic number.

It is an amenable number.

2040859397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040859397 is an equidigital number, since it uses as much as digits as its factorization.

2040859397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 2040859397 is about 45175.8718454885. The cubic root of 2040859397 is about 1268.4432113774.

The spelling of 2040859397 in words is "two billion, forty million, eight hundred fifty-nine thousand, three hundred ninety-seven".