9091274405 has 6 divisors (see below), whose sum is σ = 10909785138. Its totient is φ = 7272848960.

The previous prime is 9091274393. The next prime is 9091274407. The reversal of 9091274405 is 5044721909.

It can be written as a sum of positive squares in 3 ways, for example, as 1840581604 + 7250692801 = 42902^2 + 85151^2 .

It is a de Polignac number, because none of the positive numbers 2^k-9091274405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9091274407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 191885 + ... + 234525.

It is an arithmetic number, because the mean of its divisors is an integer number (1818297523).

Almost surely, 2^9091274405 is an apocalyptic number.

It is an amenable number.

9091274405 is a deficient number, since it is larger than the sum of its proper divisors (1818510733).

9091274405 is an frugal number, since it uses more digits than its factorization.

9091274405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85287 (or 42646 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 9091274405 is about 95348.1746285685. The cubic root of 9091274405 is about 2087.0919779583.

The spelling of 9091274405 in words is "nine billion, ninety-one million, two hundred seventy-four thousand, four hundred five".