1400221332 has 18 divisors (see below), whose sum is σ = 3539448458. Its totient is φ = 466740432.

The previous prime is 1400221331. The next prime is 1400221349. The reversal of 1400221332 is 2331220041.

It can be written as a sum of positive squares in only one way, i.e., 746600976 + 653620356 = 27324^2 + 25566^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400221331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19447483 + ... + 19447554.

Almost surely, 2^1400221332 is an apocalyptic number.

1400221332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1400221332 is an abundant number, since it is smaller than the sum of its proper divisors (2139227126).

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

1400221332 is a wasteful number, since it uses less digits than its factorization.

1400221332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38895047 (or 38895042 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1400221332 is about 37419.5314241106. The cubic root of 1400221332 is about 1118.7478917514.

Adding to 1400221332 its reverse (2331220041), we get a palindrome (3731441373).

The spelling of 1400221332 in words is "one billion, four hundred million, two hundred twenty-one thousand, three hundred thirty-two".