90734790109 has 2 divisors, whose sum is σ = 90734790110. Its totient is φ = 90734790108.

The previous prime is 90734790049. The next prime is 90734790119. The reversal of 90734790109 is 90109743709.

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., 78761616025 + 11973174084 = 280645^2 + 109422^2 .

It is a cyclic number.

It is not a de Polignac number, because 90734790109 - 2¹⁹ = 90734265821 is a prime.

It is a super-2 number, since 2×90734790109² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90734790119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45367395054 + 45367395055.

It is an arithmetic number, because the mean of its divisors is an integer number (45367395055).

Almost surely, 2^90734790109 is an apocalyptic number.

It is an amenable number.

90734790109 is a deficient number, since it is larger than the sum of its proper divisors (1).

90734790109 is an equidigital number, since it uses as much as digits as its factorization.

90734790109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 428652, while the sum is 49.

The spelling of 90734790109 in words is "ninety billion, seven hundred thirty-four million, seven hundred ninety thousand, one hundred nine".