9090945001 has 2 divisors, whose sum is σ = 9090945002. Its totient is φ = 9090945000.

The previous prime is 9090944983. The next prime is 9090945011. The reversal of 9090945001 is 1005490909.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7117453225 + 1973491776 = 84365^2 + 44424^2 .

It is a cyclic number.

It is not a de Polignac number, because 9090945001 - 2¹³ = 9090936809 is a prime.

It is a super-2 number, since 2×9090945001² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9090945011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4545472500 + 4545472501.

It is an arithmetic number, because the mean of its divisors is an integer number (4545472501).

Almost surely, 2^9090945001 is an apocalyptic number.

It is an amenable number.

9090945001 is a deficient number, since it is larger than the sum of its proper divisors (1).

9090945001 is an equidigital number, since it uses as much as digits as its factorization.

9090945001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 9090945001 is about 95346.4472384787. The cubic root of 9090945001 is about 2087.0667704638.

The spelling of 9090945001 in words is "nine billion, ninety million, nine hundred forty-five thousand, one".