222978039 has 8 divisors (see below), whose sum is σ = 297373440. Its totient is φ = 148617336.

The previous prime is 222978029. The next prime is 222978043. The reversal of 222978039 is 930879222.

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

It is not a de Polignac number, because 222978039 - 2²¹ = 220880887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222978029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18372 + ... + 27990.

It is an arithmetic number, because the mean of its divisors is an integer number (37171680).

Almost surely, 2^222978039 is an apocalyptic number.

222978039 is a deficient number, since it is larger than the sum of its proper divisors (74395401).

222978039 is an equidigital number, since it uses as much as digits as its factorization.

222978039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17349.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 222978039 is about 14932.4491962973. The cubic root of 222978039 is about 606.3927923259.

The spelling of 222978039 in words is "two hundred twenty-two million, nine hundred seventy-eight thousand, thirty-nine".