1400443399 has 2 divisors, whose sum is σ = 1400443400. Its totient is φ = 1400443398.

The previous prime is 1400443397. The next prime is 1400443409. The reversal of 1400443399 is 9933440041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1400443399 - 2¹ = 1400443397 is a prime.

It is a super-2 number, since 2×1400443399² = 3922483427605346402, which contains 22 as substring.

Together with 1400443397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400443397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700221699 + 700221700.

It is an arithmetic number, because the mean of its divisors is an integer number (700221700).

Almost surely, 2^1400443399 is an apocalyptic number.

1400443399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400443399 is an equidigital number, since it uses as much as digits as its factorization.

1400443399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 1400443399 is about 37422.4985670385. The cubic root of 1400443399 is about 1118.8070309389.

The spelling of 1400443399 in words is "one billion, four hundred million, four hundred forty-three thousand, three hundred ninety-nine".