1022399959 has 8 divisors (see below), whose sum is σ = 1208748960. Its totient is φ = 846123936.

The previous prime is 1022399953. The next prime is 1022399969. The reversal of 1022399959 is 9599932201.

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 1022399959 - 2⁵ = 1022399927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022399953) 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, 2518024 + ... + 2518429.

It is an arithmetic number, because the mean of its divisors is an integer number (151093620).

Almost surely, 2^1022399959 is an apocalyptic number.

1022399959 is a deficient number, since it is larger than the sum of its proper divisors (186349001).

1022399959 is an equidigital number, since it uses as much as digits as its factorization.

1022399959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5036489.

The product of its (nonzero) digits is 393660, while the sum is 49.

The square root of 1022399959 is about 31974.9895856121. The cubic root of 1022399959 is about 1007.4115856875.

The spelling of 1022399959 in words is "one billion, twenty-two million, three hundred ninety-nine thousand, nine hundred fifty-nine".