1457986 has 4 divisors (see below), whose sum is σ = 2186982. Its totient is φ = 728992.

The previous prime is 1457983. The next prime is 1457999. The reversal of 1457986 is 6897541.

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

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 323761 = 1065^2 + 569^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1457983) 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 as a sum of consecutive naturals, namely, 364495 + ... + 364498.

2^1457986 is an apocalyptic number.

1457986 is a deficient number, since it is larger than the sum of its proper divisors (728996).

1457986 is an equidigital number, since it uses as much as digits as its factorization.

1457986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728995.

The product of its digits is 60480, while the sum is 40.

The square root of 1457986 is about 1207.4709106227. The cubic root of 1457986 is about 113.3925315492.

The spelling of 1457986 in words is "one million, four hundred fifty-seven thousand, nine hundred eighty-six".