1379487 has 4 divisors (see below), whose sum is σ = 1839320. Its totient is φ = 919656.

The previous prime is 1379473. The next prime is 1379489. The reversal of 1379487 is 7849731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7849731 = 3 ⋅2616577.

It is not a de Polignac number, because 1379487 - 2⁶ = 1379423 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229912 + ... + 229917.

It is an arithmetic number, because the mean of its divisors is an integer number (459830).

2^1379487 is an apocalyptic number.

1379487 is a deficient number, since it is larger than the sum of its proper divisors (459833).

1379487 is an equidigital number, since it uses as much as digits as its factorization.

1379487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459832.

The product of its digits is 42336, while the sum is 39.

The square root of 1379487 is about 1174.5156448511. The cubic root of 1379487 is about 111.3198307536.

The spelling of 1379487 in words is "one million, three hundred seventy-nine thousand, four hundred eighty-seven".