1402404444 has 36 divisors (see below), whose sum is σ = 4051391344. Its totient is φ = 400686912.

The previous prime is 1402404427. The next prime is 1402404449. The reversal of 1402404444 is 4444042041.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402404449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2782297 + ... + 2782800.

Almost surely, 2^1402404444 is an apocalyptic number.

1402404444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1402404444 is an abundant number, since it is smaller than the sum of its proper divisors (2648986900).

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

1402404444 is a wasteful number, since it uses less digits than its factorization.

1402404444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5565114 (or 5565109 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

The square root of 1402404444 is about 37448.6908182382. The cubic root of 1402404444 is about 1119.3290102941.

Adding to 1402404444 its reverse (4444042041), we get a palindrome (5846446485).

The spelling of 1402404444 in words is "one billion, four hundred two million, four hundred four thousand, four hundred forty-four".