1957479 has 4 divisors (see below), whose sum is σ = 2609976. Its totient is φ = 1304984.

The previous prime is 1957477. The next prime is 1957517. The reversal of 1957479 is 9747591.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1957479 - 2¹ = 1957477 is a prime.

It is a D-number.

1957479 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1957479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1957477) 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, 326244 + ... + 326249.

It is an arithmetic number, because the mean of its divisors is an integer number (652494).

2^1957479 is an apocalyptic number.

1957479 is a deficient number, since it is larger than the sum of its proper divisors (652497).

1957479 is an equidigital number, since it uses as much as digits as its factorization.

1957479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652496.

The product of its digits is 79380, while the sum is 42.

The square root of 1957479 is about 1399.0993531555. The cubic root of 1957479 is about 125.0928163972.

The spelling of 1957479 in words is "one million, nine hundred fifty-seven thousand, four hundred seventy-nine".