1400273 has 18 divisors (see below), whose sum is σ = 1767798. Its totient is φ = 1102080.

The previous prime is 1400261. The next prime is 1400279. The reversal of 1400273 is 3720041.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 784 + 1399489 = 28^2 + 1183^2 .

It is not a de Polignac number, because 1400273 - 2⁸ = 1400017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1400279) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 34133 + ... + 34173.

It is an arithmetic number, because the mean of its divisors is an integer number (98211).

2^1400273 is an apocalyptic number.

It is an amenable number.

1400273 is a deficient number, since it is larger than the sum of its proper divisors (367525).

1400273 is an equidigital number, since it uses as much as digits as its factorization.

1400273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 1400273 is about 1183.3313145523. The cubic root of 1400273 is about 111.8761652137.

Multiplying 1400273 by its sum of digits (17), we get a square (23804641 = 4879²).

1400273 divided by its sum of digits (17) gives a square (82369 = 287²).

The spelling of 1400273 in words is "one million, four hundred thousand, two hundred seventy-three".