1444623402 has 16 divisors (see below), whose sum is σ = 2917854432. Its totient is φ = 476773200.

The previous prime is 1444623379. The next prime is 1444623403. The reversal of 1444623402 is 2043264441.

It is a self number, because there is not a number n which added to its sum of digits gives 1444623402.

It is not an unprimeable number, because it can be changed into a prime (1444623403) 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, 1191328 + ... + 1192539.

It is an arithmetic number, because the mean of its divisors is an integer number (182365902).

Almost surely, 2^1444623402 is an apocalyptic number.

1444623402 is an abundant number, since it is smaller than the sum of its proper divisors (1473231030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1444623402 is a wasteful number, since it uses less digits than its factorization.

1444623402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383973.

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 1444623402 is about 38008.2017727753. The cubic root of 1444623402 is about 1130.4504957111.

Adding to 1444623402 its reverse (2043264441), we get a palindrome (3487887843).

The spelling of 1444623402 in words is "one billion, four hundred forty-four million, six hundred twenty-three thousand, four hundred two".