4020444442 has 16 divisors (see below), whose sum is σ = 6899225472. Its totient is φ = 1721288880.

The previous prime is 4020444409. The next prime is 4020444451. The reversal of 4020444442 is 2444440204.

It is a super-2 number, since 2×4020444442² = 32327947022417382728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4020444442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132309 + ... + 159832.

It is an arithmetic number, because the mean of its divisors is an integer number (431201592).

Almost surely, 2^4020444442 is an apocalyptic number.

4020444442 is a deficient number, since it is larger than the sum of its proper divisors (2878781030).

4020444442 is a wasteful number, since it uses less digits than its factorization.

4020444442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293133.

The product of its (nonzero) digits is 16384, while the sum is 28.

The square root of 4020444442 is about 63406.9747109890. The cubic root of 4020444442 is about 1590.1009181360.

Adding to 4020444442 its reverse (2444440204), we get a palindrome (6464884646).

The spelling of 4020444442 in words is "four billion, twenty million, four hundred forty-four thousand, four hundred forty-two".