1400407344 has 120 divisors (see below), whose sum is σ = 4508119200. Its totient is φ = 397522944.

The previous prime is 1400407297. The next prime is 1400407363. The reversal of 1400407344 is 4437040041.

It is a super-2 number, since 2×1400407344² = 3922281458258268672, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153832 + ... + 162680.

It is an arithmetic number, because the mean of its divisors is an integer number (37567660).

Almost surely, 2^1400407344 is an apocalyptic number.

1400407344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1400407344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2254059600).

1400407344 is an abundant number, since it is smaller than the sum of its proper divisors (3107711856).

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

1400407344 is a wasteful number, since it uses less digits than its factorization.

1400407344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9027 (or 9018 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 1400407344 is about 37422.0168350130. The cubic root of 1400407344 is about 1118.7974294718.

Adding to 1400407344 its reverse (4437040041), we get a palindrome (5837447385).

The spelling of 1400407344 in words is "one billion, four hundred million, four hundred seven thousand, three hundred forty-four".