1090099001 has 2 divisors, whose sum is σ = 1090099002. Its totient is φ = 1090099000.

The previous prime is 1090098991. The next prime is 1090099019. The reversal of 1090099001 is 1009900901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1025280400 + 64818601 = 32020^2 + 8051^2 .

It is a cyclic number.

It is not a de Polignac number, because 1090099001 - 2⁶ = 1090098937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1090095001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545049500 + 545049501.

It is an arithmetic number, because the mean of its divisors is an integer number (545049501).

Almost surely, 2^1090099001 is an apocalyptic number.

It is an amenable number.

1090099001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090099001 is an equidigital number, since it uses as much as digits as its factorization.

1090099001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 29.

The square root of 1090099001 is about 33016.6473313085. The cubic root of 1090099001 is about 1029.1736234672.

Adding to 1090099001 its reverse (1009900901), we get a palindrome (2099999902).

It can be divided in two parts, 10900 and 99001, that added together give a palindrome (109901).

The spelling of 1090099001 in words is "one billion, ninety million, ninety-nine thousand, one".