1028976399 has 16 divisors (see below), whose sum is σ = 1662992640. Its totient is φ = 623621880.

The previous prime is 1028976383. The next prime is 1028976409. The reversal of 1028976399 is 9936798201.

1028976399 is a `hidden beast` number, since 102 + 89 + 76 + 399 = 666.

It is not a de Polignac number, because 1028976399 - 2⁴ = 1028976383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028976329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1731987 + ... + 1732580.

It is an arithmetic number, because the mean of its divisors is an integer number (103937040).

Almost surely, 2^1028976399 is an apocalyptic number.

1028976399 is a deficient number, since it is larger than the sum of its proper divisors (634016241).

1028976399 is a wasteful number, since it uses less digits than its factorization.

1028976399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464587 (or 3464581 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 1028976399 is about 32077.6619939795. The cubic root of 1028976399 is about 1009.5669806682.

The spelling of 1028976399 in words is "one billion, twenty-eight million, nine hundred seventy-six thousand, three hundred ninety-nine".