1400240447 has 2 divisors, whose sum is σ = 1400240448. Its totient is φ = 1400240446.

The previous prime is 1400240441. The next prime is 1400240449. The reversal of 1400240447 is 7440420041.

It is a strong prime.

It is an emirp because it is prime and its reverse (7440420041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1400240447 - 2⁶ = 1400240383 is a prime.

Together with 1400240449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400240441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700120223 + 700120224.

It is an arithmetic number, because the mean of its divisors is an integer number (700120224).

Almost surely, 2^1400240447 is an apocalyptic number.

1400240447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400240447 is an equidigital number, since it uses as much as digits as its factorization.

1400240447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 1400240447 is about 37419.7868379819. The cubic root of 1400240447 is about 1118.7529825581.

Adding to 1400240447 its reverse (7440420041), we get a palindrome (8840660488).

The spelling of 1400240447 in words is "one billion, four hundred million, two hundred forty thousand, four hundred forty-seven".