1097919 has 12 divisors (see below), whose sum is σ = 1623336. Its totient is φ = 714672.

The previous prime is 1097909. The next prime is 1097923. The reversal of 1097919 is 9197901.

It is not a de Polignac number, because 1097919 - 2⁴ = 1097903 is a prime.

It is a super-2 number, since 2×1097919² = 2410852261122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1032 + ... + 1805.

It is an arithmetic number, because the mean of its divisors is an integer number (135278).

2^1097919 is an apocalyptic number.

1097919 is a deficient number, since it is larger than the sum of its proper divisors (525417).

1097919 is a wasteful number, since it uses less digits than its factorization.

1097919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886 (or 2883 counting only the distinct ones).

The product of its (nonzero) digits is 5103, while the sum is 36.

The square root of 1097919 is about 1047.8163006940. The cubic root of 1097919 is about 103.1628742427.

It can be divided in two parts, 1097 and 919, that added together give a triangular number (2016 = T₆₃).

The spelling of 1097919 in words is "one million, ninety-seven thousand, nine hundred nineteen".