1379498091 has 4 divisors (see below), whose sum is σ = 1839330792. Its totient is φ = 919665392.

The previous prime is 1379498089. The next prime is 1379498147. The reversal of 1379498091 is 1908949731.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1379498091 - 2¹ = 1379498089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1379498051) 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, 229916346 + ... + 229916351.

It is an arithmetic number, because the mean of its divisors is an integer number (459832698).

Almost surely, 2^1379498091 is an apocalyptic number.

1379498091 is a deficient number, since it is larger than the sum of its proper divisors (459832701).

1379498091 is an equidigital number, since it uses as much as digits as its factorization.

1379498091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459832700.

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 1379498091 is about 37141.5951596051. The cubic root of 1379498091 is about 1113.2012908789.

The spelling of 1379498091 in words is "one billion, three hundred seventy-nine million, four hundred ninety-eight thousand, ninety-one".