1400845 has 8 divisors (see below), whose sum is σ = 1739160. Its totient is φ = 1081920.

The previous prime is 1400821. The next prime is 1400863. The reversal of 1400845 is 5480041.

It can be written as a sum of positive squares in 4 ways, for example, as 3721 + 1397124 = 61^2 + 1182^2 .

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

It is not a de Polignac number, because 1400845 - 2¹⁵ = 1368077 is a prime.

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, 4686 + ... + 4975.

It is an arithmetic number, because the mean of its divisors is an integer number (217395).

2^1400845 is an apocalyptic number.

It is an amenable number.

1400845 is a deficient number, since it is larger than the sum of its proper divisors (338315).

1400845 is an equidigital number, since it uses as much as digits as its factorization.

1400845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9695.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1400845 is about 1183.5729804283. The cubic root of 1400845 is about 111.8913966376.

Adding to 1400845 its reverse (5480041), we get a palindrome (6880886).

The spelling of 1400845 in words is "one million, four hundred thousand, eight hundred forty-five".