743491 has 4 divisors (see below), whose sum is σ = 849712. Its totient is φ = 637272.

The previous prime is 743447. The next prime is 743507. The reversal of 743491 is 194347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194347 = 109 ⋅1783.

It is a cyclic number.

It is not a de Polignac number, because 743491 - 2⁷ = 743363 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743401) 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, 53100 + ... + 53113.

It is an arithmetic number, because the mean of its divisors is an integer number (212428).

2⁷⁴³⁴⁹¹ is an apocalyptic number.

743491 is a deficient number, since it is larger than the sum of its proper divisors (106221).

743491 is a wasteful number, since it uses less digits than its factorization.

743491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106220.

The product of its digits is 3024, while the sum is 28.

The square root of 743491 is about 862.2592417597. The cubic root of 743491 is about 90.5924291991.

The spelling of 743491 in words is "seven hundred forty-three thousand, four hundred ninety-one".