1972459 has 4 divisors (see below), whose sum is σ = 2088504. Its totient is φ = 1856416.

The previous prime is 1972441. The next prime is 1972471. The reversal of 1972459 is 9542791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9542791 = 41 ⋅232751.

It is a cyclic number.

It is not a de Polignac number, because 1972459 - 2¹⁷ = 1841387 is a prime.

It is a Duffinian number.

1972459 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1972259) 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, 57997 + ... + 58030.

It is an arithmetic number, because the mean of its divisors is an integer number (522126).

2^1972459 is an apocalyptic number.

1972459 is a deficient number, since it is larger than the sum of its proper divisors (116045).

1972459 is a wasteful number, since it uses less digits than its factorization.

1972459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116044.

The product of its digits is 22680, while the sum is 37.

The square root of 1972459 is about 1404.4425940564. The cubic root of 1972459 is about 125.4111051250.

The spelling of 1972459 in words is "one million, nine hundred seventy-two thousand, four hundred fifty-nine".