9140220987 has 4 divisors (see below), whose sum is σ = 12186961320. Its totient is φ = 6093480656.

The previous prime is 9140220983. The next prime is 9140221001. The reversal of 9140220987 is 7890220419.

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 9140220987 - 2² = 9140220983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9140220983) 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, 1523370162 + ... + 1523370167.

It is an arithmetic number, because the mean of its divisors is an integer number (3046740330).

Almost surely, 2^9140220987 is an apocalyptic number.

9140220987 is a deficient number, since it is larger than the sum of its proper divisors (3046740333).

9140220987 is a wasteful number, since it uses less digits than its factorization.

9140220987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046740332.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 9140220987 is about 95604.5029640341. The cubic root of 9140220987 is about 2090.8308462269.

The spelling of 9140220987 in words is "nine billion, one hundred forty million, two hundred twenty thousand, nine hundred eighty-seven".