1090299397 has 4 divisors (see below), whose sum is σ = 1189417536. Its totient is φ = 991181260.

The previous prime is 1090299349. The next prime is 1090299493. The reversal of 1090299397 is 7939920901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1090299397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1090299397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090299307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49559053 + ... + 49559074.

It is an arithmetic number, because the mean of its divisors is an integer number (297354384).

Almost surely, 2^1090299397 is an apocalyptic number.

It is an amenable number.

1090299397 is a deficient number, since it is larger than the sum of its proper divisors (99118139).

1090299397 is an equidigital number, since it uses as much as digits as its factorization.

1090299397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99118138.

The product of its (nonzero) digits is 275562, while the sum is 49.

The square root of 1090299397 is about 33019.6819639439. The cubic root of 1090299397 is about 1029.2366849079.

The spelling of 1090299397 in words is "one billion, ninety million, two hundred ninety-nine thousand, three hundred ninety-seven".