1022044402 has 4 divisors (see below), whose sum is σ = 1533066606. Its totient is φ = 511022200.

The previous prime is 1022044381. The next prime is 1022044417. The reversal of 1022044402 is 2044402201.

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., 954130321 + 67914081 = 30889^2 + 8241^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1022044402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255511099 + ... + 255511102.

Almost surely, 2^1022044402 is an apocalyptic number.

1022044402 is a deficient number, since it is larger than the sum of its proper divisors (511022204).

1022044402 is an equidigital number, since it uses as much as digits as its factorization.

1022044402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511022203.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1022044402 is about 31969.4291785137. The cubic root of 1022044402 is about 1007.2947906347.

Adding to 1022044402 its reverse (2044402201), we get a palindrome (3066446603).

The spelling of 1022044402 in words is "one billion, twenty-two million, forty-four thousand, four hundred two".