1379745 has 12 divisors (see below), whose sum is σ = 2391636. Its totient is φ = 735840.

The previous prime is 1379699. The next prime is 1379753. The reversal of 1379745 is 5479731.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1065024 + 314721 = 1032^2 + 561^2 .

It is not a de Polignac number, because 1379745 - 2⁶ = 1379681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15286 + ... + 15375.

It is an arithmetic number, because the mean of its divisors is an integer number (199303).

2^1379745 is an apocalyptic number.

1379745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1379745 is a deficient number, since it is larger than the sum of its proper divisors (1011891).

1379745 is a wasteful number, since it uses less digits than its factorization.

1379745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30672 (or 30669 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 1379745 is about 1174.6254722251. The cubic root of 1379745 is about 111.3267702236.

The spelling of 1379745 in words is "one million, three hundred seventy-nine thousand, seven hundred forty-five".