1400244917 has 4 divisors (see below), whose sum is σ = 1400322540. Its totient is φ = 1400167296.

The previous prime is 1400244913. The next prime is 1400244931. The reversal of 1400244917 is 7194420041.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 841348036 + 558896881 = 29006^2 + 23641^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400244917 - 2² = 1400244913 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400244913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3959 + ... + 53067.

It is an arithmetic number, because the mean of its divisors is an integer number (350080635).

Almost surely, 2^1400244917 is an apocalyptic number.

It is an amenable number.

1400244917 is a deficient number, since it is larger than the sum of its proper divisors (77623).

1400244917 is an equidigital number, since it uses as much as digits as its factorization.

1400244917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77622.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1400244917 is about 37419.8465656929. The cubic root of 1400244917 is about 1118.7541730252.

Adding to 1400244917 its reverse (7194420041), we get a palindrome (8594664958).

The spelling of 1400244917 in words is "one billion, four hundred million, two hundred forty-four thousand, nine hundred seventeen".