7140740091 has 4 divisors (see below), whose sum is σ = 9520986792. Its totient is φ = 4760493392.

The previous prime is 7140740077. The next prime is 7140740099. The reversal of 7140740091 is 1900470417.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7140740091 - 2⁹ = 7140739579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7140740099) 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, 1190123346 + ... + 1190123351.

It is an arithmetic number, because the mean of its divisors is an integer number (2380246698).

Almost surely, 2^7140740091 is an apocalyptic number.

7140740091 is a deficient number, since it is larger than the sum of its proper divisors (2380246701).

7140740091 is a wasteful number, since it uses less digits than its factorization.

7140740091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380246700.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 7140740091 is about 84502.8998969858. The cubic root of 7140740091 is about 1925.6665002816. Note that the first 3 decimals are identical.

The spelling of 7140740091 in words is "seven billion, one hundred forty million, seven hundred forty thousand, ninety-one".