1004979397 has 2 divisors, whose sum is σ = 1004979398. Its totient is φ = 1004979396.

The previous prime is 1004979389. The next prime is 1004979419. The reversal of 1004979397 is 7939794001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 642419716 + 362559681 = 25346^2 + 19041^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004979397 - 2³ = 1004979389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1004979397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1004979337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502489698 + 502489699.

It is an arithmetic number, because the mean of its divisors is an integer number (502489699).

Almost surely, 2^1004979397 is an apocalyptic number.

It is an amenable number.

1004979397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004979397 is an equidigital number, since it uses as much as digits as its factorization.

1004979397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 1004979397 is about 31701.4100159599. The cubic root of 1004979397 is about 1001.6570516631.

The spelling of 1004979397 in words is "one billion, four million, nine hundred seventy-nine thousand, three hundred ninety-seven".