1457979 has 4 divisors (see below), whose sum is σ = 1943976. Its totient is φ = 971984.

The previous prime is 1457969. The next prime is 1457983. The reversal of 1457979 is 9797541.

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 1457979 - 2¹² = 1453883 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 1457979.

It is not an unprimeable number, because it can be changed into a prime (1457959) 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, 242994 + ... + 242999.

It is an arithmetic number, because the mean of its divisors is an integer number (485994).

2^1457979 is an apocalyptic number.

1457979 is a deficient number, since it is larger than the sum of its proper divisors (485997).

1457979 is an equidigital number, since it uses as much as digits as its factorization.

1457979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485996.

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

The square root of 1457979 is about 1207.4680119987. The cubic root of 1457979 is about 113.3923500776.

The spelling of 1457979 in words is "one million, four hundred fifty-seven thousand, nine hundred seventy-nine".