1097000639 has 4 divisors (see below), whose sum is σ = 1253715024. Its totient is φ = 940286256.

The previous prime is 1097000609. The next prime is 1097000647. The reversal of 1097000639 is 9360007901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9360007901 = 1987 ⋅4710623.

It is not a de Polignac number, because 1097000639 - 2²⁴ = 1080223423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1097000599 and 1097000608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097000609) 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 in 3 ways as a sum of consecutive naturals, for example, 78357182 + ... + 78357195.

It is an arithmetic number, because the mean of its divisors is an integer number (313428756).

Almost surely, 2^1097000639 is an apocalyptic number.

1097000639 is a deficient number, since it is larger than the sum of its proper divisors (156714385).

1097000639 is an equidigital number, since it uses as much as digits as its factorization.

1097000639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156714384.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 1097000639 is about 33120.9999698077. Note that the first 4 decimals coincide. The cubic root of 1097000639 is about 1031.3410248199.

The spelling of 1097000639 in words is "one billion, ninety-seven million, six hundred thirty-nine", and thus it is an aban number.