1400443144 has 8 divisors (see below), whose sum is σ = 2625830910. Its totient is φ = 700221568.

The previous prime is 1400443111. The next prime is 1400443183. The reversal of 1400443144 is 4413440041.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1208952900 + 191490244 = 34770^2 + 13838^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1400443144² = 3922481999153209472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87527689 + ... + 87527704.

Almost surely, 2^1400443144 is an apocalyptic number.

It is an amenable number.

1400443144 is a deficient number, since it is larger than the sum of its proper divisors (1225387766).

1400443144 is a wasteful number, since it uses less digits than its factorization.

1400443144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175055399 (or 175055395 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1400443144 is about 37422.4951599970. The cubic root of 1400443144 is about 1118.8069630328.

Adding to 1400443144 its reverse (4413440041), we get a palindrome (5813883185).

The spelling of 1400443144 in words is "one billion, four hundred million, four hundred forty-three thousand, one hundred forty-four".