9051040391 has 4 divisors (see below), whose sum is σ = 9221814792. Its totient is φ = 8880265992.

The previous prime is 9051040343. The next prime is 9051040399. The reversal of 9051040391 is 1930401509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1930401509 = 15361 ⋅125669.

It is a cyclic number.

It is not a de Polignac number, because 9051040391 - 2²² = 9046846087 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 (9051040399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85387121 + ... + 85387226.

It is an arithmetic number, because the mean of its divisors is an integer number (2305453698).

Almost surely, 2^9051040391 is an apocalyptic number.

9051040391 is a deficient number, since it is larger than the sum of its proper divisors (170774401).

9051040391 is a wasteful number, since it uses less digits than its factorization.

9051040391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170774400.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 9051040391 is about 95136.9559687507. The cubic root of 9051040391 is about 2084.0085720393.

The spelling of 9051040391 in words is "nine billion, fifty-one million, forty thousand, three hundred ninety-one".