1400616 has 72 divisors (see below), whose sum is σ = 4423770. Its totient is φ = 399168.

The previous prime is 1400599. The next prime is 1400627. The reversal of 1400616 is 6160041.

It can be written as a sum of positive squares in only one way, i.e., 1102500 + 298116 = 1050^2 + 546^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 3330 + ... + 3726.

2^1400616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1400616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2211885).

1400616 is an abundant number, since it is smaller than the sum of its proper divisors (3023154).

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

1400616 is a wasteful number, since it uses less digits than its factorization.

1400616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1400616 is about 1183.4762355029. The cubic root of 1400616 is about 111.8852992401.

Adding to 1400616 its reverse (6160041), we get a palindrome (7560657).

It can be divided in two parts, 1400 and 616, that added together give a triangular number (2016 = T₆₃).

The spelling of 1400616 in words is "one million, four hundred thousand, six hundred sixteen".