1004000397 has 8 divisors (see below), whose sum is σ = 1342945344. Its totient is φ = 667194528.

The previous prime is 1004000381. The next prime is 1004000411. The reversal of 1004000397 is 7930004001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1004000397 - 2⁴ = 1004000381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004040397) 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 7 ways as a sum of consecutive naturals, for example, 533673 + ... + 535550.

It is an arithmetic number, because the mean of its divisors is an integer number (167868168).

Almost surely, 2^1004000397 is an apocalyptic number.

It is an amenable number.

1004000397 is a deficient number, since it is larger than the sum of its proper divisors (338944947).

1004000397 is a wasteful number, since it uses less digits than its factorization.

1004000397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069539.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 1004000397 is about 31685.9653001136. The cubic root of 1004000397 is about 1001.3316914773.

Adding to 1004000397 its reverse (7930004001), we get a palindrome (8934004398).

The spelling of 1004000397 in words is "one billion, four million, three hundred ninety-seven", and thus it is an aban number.