1402013444 has 12 divisors (see below), whose sum is σ = 2642256204. Its totient is φ = 647083104.

The previous prime is 1402013387. The next prime is 1402013449. The reversal of 1402013444 is 4443102041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 224700100 + 1177313344 = 14990^2 + 34312^2 .

It is a super-2 number, since 2×1402013444² = 3931283394313482272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1402013449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13480847 + ... + 13480950.

It is an arithmetic number, because the mean of its divisors is an integer number (220188017).

Almost surely, 2^1402013444 is an apocalyptic number.

It is an amenable number.

1402013444 is a deficient number, since it is larger than the sum of its proper divisors (1240242760).

1402013444 is a wasteful number, since it uses less digits than its factorization.

1402013444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26961814 (or 26961812 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1402013444 is about 37443.4699780883. The cubic root of 1402013444 is about 1119.2249750839.

Adding to 1402013444 its reverse (4443102041), we get a palindrome (5845115485).

The spelling of 1402013444 in words is "one billion, four hundred two million, thirteen thousand, four hundred forty-four".