7219994 has 4 divisors (see below), whose sum is σ = 10829994. Its totient is φ = 3609996.

The previous prime is 7219973. The next prime is 7219997. The reversal of 7219994 is 4999127.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 7219969 + 25 = 2687^2 + 5^2 .

It is not an unprimeable number, because it can be changed into a prime (7219997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1804997 + ... + 1805000.

Almost surely, 2^7219994 is an apocalyptic number.

7219994 is a deficient number, since it is larger than the sum of its proper divisors (3610000).

7219994 is a wasteful number, since it uses less digits than its factorization.

7219994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3609999.

The product of its digits is 40824, while the sum is 41.

The square root of 7219994 is about 2687.0046520243. The cubic root of 7219994 is about 193.2764524171.

The spelling of 7219994 in words is "seven million, two hundred nineteen thousand, nine hundred ninety-four".