Search a number
1394761 = 11812

1394761 has 3 divisors (see below), whose sum is σ = 1395943. Its totient is φ = 1393580.

The previous prime is 1394753. The next prime is 1394777. The reversal of 1394761 is 1674931.

It is a happy number.

The square root of 1394761 is 1181.

It is a perfect power (a square), and thus also a powerful number.

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 only one way, i.e., 1279161 + 115600 = 1131^2 + 340^2 .

It is not a de Polignac number, because 1394761 - 23 = 1394753 is a prime.

It is a Duffinian number.

1394761 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1394711) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 591 + ... + 1771.

21394761 is an apocalyptic number.

1394761 is the 1181-st square number.

1394761 is the 591-st centered octagonal number.

It is an amenable number.

1394761 is a deficient number, since it is larger than the sum of its proper divisors (1182).

1394761 is an frugal number, since it uses more digits than its factorization.

1394761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362 (or 1181 counting only the distinct ones).

The product of its digits is 4536, while the sum is 31.

The cubic root of 1394761 is about 111.7291766541.

It can be divided in two parts, 139 and 4761, that added together give a square (4900 = 702).

The spelling of 1394761 in words is "one million, three hundred ninety-four thousand, seven hundred sixty-one".

Divisors: 1 1181 1394761