1040604399 has 6 divisors (see below), whose sum is σ = 1503095256. Its totient is φ = 693736260.

The previous prime is 1040604379. The next prime is 1040604401. The reversal of 1040604399 is 9934060401.

1040604399 is a `hidden beast` number, since 1 + 0 + 40 + 604 + 3 + 9 + 9 = 666.

It is not a de Polignac number, because 1040604399 - 2¹⁷ = 1040473327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040604319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57811347 + ... + 57811364.

It is an arithmetic number, because the mean of its divisors is an integer number (250515876).

Almost surely, 2^1040604399 is an apocalyptic number.

1040604399 is a deficient number, since it is larger than the sum of its proper divisors (462490857).

1040604399 is a wasteful number, since it uses less digits than its factorization.

1040604399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115622717 (or 115622714 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 1040604399 is about 32258.4004408154. The cubic root of 1040604399 is about 1013.3556326488.

The spelling of 1040604399 in words is "one billion, forty million, six hundred four thousand, three hundred ninety-nine".