1092921997 has 2 divisors, whose sum is σ = 1092921998. Its totient is φ = 1092921996.

The previous prime is 1092921943. The next prime is 1092922001. The reversal of 1092921997 is 7991292901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 938441956 + 154480041 = 30634^2 + 12429^2 .

It is a cyclic number.

It is not a de Polignac number, because 1092921997 - 2²⁷ = 958704269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1092921997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1092921917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 546460998 + 546460999.

It is an arithmetic number, because the mean of its divisors is an integer number (546460999).

Almost surely, 2^1092921997 is an apocalyptic number.

It is an amenable number.

1092921997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1092921997 is an equidigital number, since it uses as much as digits as its factorization.

1092921997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 49.

The square root of 1092921997 is about 33059.3707895356. The cubic root of 1092921997 is about 1030.0612641474.

The spelling of 1092921997 in words is "one billion, ninety-two million, nine hundred twenty-one thousand, nine hundred ninety-seven".