1400340245 has 8 divisors (see below), whose sum is σ = 1682383416. Its totient is φ = 1118955456.

The previous prime is 1400340187. The next prime is 1400340251. The reversal of 1400340245 is 5420430041.

It can be written as a sum of positive squares in 4 ways, for example, as 253637476 + 1146702769 = 15926^2 + 33863^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1400340245 - 2⁶ = 1400340181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1400340245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159902 + ... + 168431.

It is an arithmetic number, because the mean of its divisors is an integer number (210297927).

Almost surely, 2^1400340245 is an apocalyptic number.

It is an amenable number.

1400340245 is a deficient number, since it is larger than the sum of its proper divisors (282043171).

1400340245 is an equidigital number, since it uses as much as digits as its factorization.

1400340245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329191.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1400340245 is about 37421.1203065862. The cubic root of 1400340245 is about 1118.7795605310.

Adding to 1400340245 its reverse (5420430041), we get a palindrome (6820770286).

The spelling of 1400340245 in words is "one billion, four hundred million, three hundred forty thousand, two hundred forty-five".