1490779 has 4 divisors (see below), whose sum is σ = 1515280. Its totient is φ = 1466280.

The previous prime is 1490773. The next prime is 1490789. The reversal of 1490779 is 9770941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9770941 = 29 ⋅336929.

It is a cyclic number.

It is not a de Polignac number, because 1490779 - 2⁹ = 1490267 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12159 + ... + 12280.

It is an arithmetic number, because the mean of its divisors is an integer number (378820).

2^1490779 is an apocalyptic number.

1490779 is a deficient number, since it is larger than the sum of its proper divisors (24501).

1490779 is an equidigital number, since it uses as much as digits as its factorization.

1490779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24500.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 1490779 is about 1220.9746107106. The cubic root of 1490779 is about 114.2363772907.

Subtracting from 1490779 its product of nonzero digits (15876), we obtain a triangular number (1474903 = T₁₇₁₇).

The spelling of 1490779 in words is "one million, four hundred ninety thousand, seven hundred seventy-nine".