1400443441 has 2 divisors, whose sum is σ = 1400443442. Its totient is φ = 1400443440.

The previous prime is 1400443427. The next prime is 1400443523. The reversal of 1400443441 is 1443440041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 992565025 + 407878416 = 31505^2 + 20196^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400443441 - 2⁵ = 1400443409 is a prime.

It is a super-2 number, since 2×1400443441² = 3922483662879840962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1400446441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700221720 + 700221721.

It is an arithmetic number, because the mean of its divisors is an integer number (700221721).

Almost surely, 2^1400443441 is an apocalyptic number.

It is an amenable number.

1400443441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400443441 is an equidigital number, since it uses as much as digits as its factorization.

1400443441 is an evil number, because the sum of its binary digits is even.

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

The square root of 1400443441 is about 37422.4991281983. The cubic root of 1400443441 is about 1118.8070421234.

Adding to 1400443441 its reverse (1443440041), we get a palindrome (2843883482).

The spelling of 1400443441 in words is "one billion, four hundred million, four hundred forty-three thousand, four hundred forty-one".