1097928329 has 4 divisors (see below), whose sum is σ = 1098350484. Its totient is φ = 1097506176.

The previous prime is 1097928317. The next prime is 1097928341. The reversal of 1097928329 is 9238297901.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1097928317) and next prime (1097928341).

It can be written as a sum of positive squares in 2 ways, for example, as 514609225 + 583319104 = 22685^2 + 24152^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1097928329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1097928229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207152 + ... + 212385.

It is an arithmetic number, because the mean of its divisors is an integer number (274587621).

Almost surely, 2^1097928329 is an apocalyptic number.

It is an amenable number.

1097928329 is a deficient number, since it is larger than the sum of its proper divisors (422155).

1097928329 is an equidigital number, since it uses as much as digits as its factorization.

1097928329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422154.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 1097928329 is about 33135.0015693375. The cubic root of 1097928329 is about 1031.6316643293.

The spelling of 1097928329 in words is "one billion, ninety-seven million, nine hundred twenty-eight thousand, three hundred twenty-nine".