1491394 has 4 divisors (see below), whose sum is σ = 2237094. Its totient is φ = 745696.

The previous prime is 1491377. The next prime is 1491401. The reversal of 1491394 is 4931941.

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., 1075369 + 416025 = 1037^2 + 645^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372847 + ... + 372850.

2^1491394 is an apocalyptic number.

1491394 is a deficient number, since it is larger than the sum of its proper divisors (745700).

1491394 is an equidigital number, since it uses as much as digits as its factorization.

1491394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745699.

The product of its digits is 3888, while the sum is 31.

The square root of 1491394 is about 1221.2264327306. The cubic root of 1491394 is about 114.2520840036.

The spelling of 1491394 in words is "one million, four hundred ninety-one thousand, three hundred ninety-four".