7223942891 has 8 divisors (see below), whose sum is σ = 8152412400. Its totient is φ = 6340764640.

The previous prime is 7223942851. The next prime is 7223942893. The reversal of 7223942891 is 1982493227.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7223942891 - 2⁶ = 7223942827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7223942893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11322476 + ... + 11323113.

It is an arithmetic number, because the mean of its divisors is an integer number (1019051550).

Almost surely, 2^7223942891 is an apocalyptic number.

7223942891 is a deficient number, since it is larger than the sum of its proper divisors (928469509).

7223942891 is a wasteful number, since it uses less digits than its factorization.

7223942891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22645629.

The product of its digits is 435456, while the sum is 47.

The square root of 7223942891 is about 84993.7814842945. The cubic root of 7223942891 is about 1933.1168275753.

The spelling of 7223942891 in words is "seven billion, two hundred twenty-three million, nine hundred forty-two thousand, eight hundred ninety-one".