14400457 has 2 divisors, whose sum is σ = 14400458. Its totient is φ = 14400456.

The previous prime is 14400431. The next prime is 14400487. The reversal of 14400457 is 75400441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7557001 + 6843456 = 2749^2 + 2616^2 .

It is an emirp because it is prime and its reverse (75400441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14400457 is a prime.

It is not a weakly prime, because it can be changed into another prime (14400487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7200228 + 7200229.

It is an arithmetic number, because the mean of its divisors is an integer number (7200229).

Almost surely, 2^14400457 is an apocalyptic number.

It is an amenable number.

14400457 is a deficient number, since it is larger than the sum of its proper divisors (1).

14400457 is an equidigital number, since it uses as much as digits as its factorization.

14400457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 14400457 is about 3794.7934067614. The cubic root of 14400457 is about 243.2906534682.

Adding to 14400457 its reverse (75400441), we get a palindrome (89800898).

The spelling of 14400457 in words is "fourteen million, four hundred thousand, four hundred fifty-seven".