749491 has 4 divisors (see below), whose sum is σ = 759832. Its totient is φ = 739152.

The previous prime is 749471. The next prime is 749543. The reversal of 749491 is 194947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194947 = 383 ⋅509.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-749491 is a prime.

It is a super-3 number, since 3×749491³ = 1263049935901133313, which contains 333 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (749401) 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, 5061 + ... + 5206.

It is an arithmetic number, because the mean of its divisors is an integer number (189958).

2⁷⁴⁹⁴⁹¹ is an apocalyptic number.

749491 is a deficient number, since it is larger than the sum of its proper divisors (10341).

749491 is a wasteful number, since it uses less digits than its factorization.

749491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10340.

The product of its digits is 9072, while the sum is 34.

The square root of 749491 is about 865.7314826203. The cubic root of 749491 is about 90.8354713372.

The spelling of 749491 in words is "seven hundred forty-nine thousand, four hundred ninety-one".