1140091 has 2 divisors, whose sum is σ = 1140092. Its totient is φ = 1140090.

The previous prime is 1139993. The next prime is 1140101. The reversal of 1140091 is 1900411.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140091 is a prime.

1140091 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1140691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570045 + 570046.

It is an arithmetic number, because the mean of its divisors is an integer number (570046).

2^1140091 is an apocalyptic number.

1140091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140091 is an equidigital number, since it uses as much as digits as its factorization.

1140091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1140091 is about 1067.7504390072. The cubic root of 1140091 is about 104.4671722164.

The spelling of 1140091 in words is "one million, one hundred forty thousand, ninety-one".