4987879397 has 2 divisors, whose sum is σ = 4987879398. Its totient is φ = 4987879396.

The previous prime is 4987879361. The next prime is 4987879451. The reversal of 4987879397 is 7939787894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4933798081 + 54081316 = 70241^2 + 7354^2 .

It is a cyclic number.

It is not a de Polignac number, because 4987879397 - 2⁶ = 4987879333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4987879397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4987879307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2493939698 + 2493939699.

It is an arithmetic number, because the mean of its divisors is an integer number (2493939699).

Almost surely, 2^4987879397 is an apocalyptic number.

It is an amenable number.

4987879397 is a deficient number, since it is larger than the sum of its proper divisors (1).

4987879397 is an equidigital number, since it uses as much as digits as its factorization.

4987879397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192036096, while the sum is 71.

The square root of 4987879397 is about 70624.9205096898. The cubic root of 4987879397 is about 1708.5930993719.

The spelling of 4987879397 in words is "four billion, nine hundred eighty-seven million, eight hundred seventy-nine thousand, three hundred ninety-seven".