1022390979 has 8 divisors (see below), whose sum is σ = 1363797840. Its totient is φ = 681289056.

The previous prime is 1022390959. The next prime is 1022391011. The reversal of 1022390979 is 9790932201.

It is a happy number.

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

It is not a de Polignac number, because 1022390979 - 2⁵ = 1022390947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1022390979.

It is not an unprimeable number, because it can be changed into a prime (1022390939) 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, 68292 + ... + 81905.

It is an arithmetic number, because the mean of its divisors is an integer number (170474730).

Almost surely, 2^1022390979 is an apocalyptic number.

1022390979 is a deficient number, since it is larger than the sum of its proper divisors (341406861).

1022390979 is a wasteful number, since it uses less digits than its factorization.

1022390979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152469.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 1022390979 is about 31974.8491630531. The cubic root of 1022390979 is about 1007.4086362278.

The spelling of 1022390979 in words is "one billion, twenty-two million, three hundred ninety thousand, nine hundred seventy-nine".