1493977 has 4 divisors (see below), whose sum is σ = 1581876. Its totient is φ = 1406080.

The previous prime is 1493971. The next prime is 1493981. The reversal of 1493977 is 7793941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7793941 = 23 ⋅338867.

It can be written as a sum of positive squares in 2 ways, for example, as 1104601 + 389376 = 1051^2 + 624^2 .

It is a cyclic number.

It is not a de Polignac number, because 1493977 - 2¹¹ = 1491929 is a prime.

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 a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1493971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43924 + ... + 43957.

It is an arithmetic number, because the mean of its divisors is an integer number (395469).

2^1493977 is an apocalyptic number.

1493977 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1493977 is a deficient number, since it is larger than the sum of its proper divisors (87899).

1493977 is an equidigital number, since it uses as much as digits as its factorization.

1493977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87898.

The product of its digits is 47628, while the sum is 40.

The square root of 1493977 is about 1222.2835186650. The cubic root of 1493977 is about 114.3180050869.

The spelling of 1493977 in words is "one million, four hundred ninety-three thousand, nine hundred seventy-seven".