749381 has 4 divisors (see below), whose sum is σ = 751500. Its totient is φ = 747264.

The previous prime is 749351. The next prime is 749383. The reversal of 749381 is 183947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 183947 = 29 ⋅6343.

It can be written as a sum of positive squares in 2 ways, for example, as 429025 + 320356 = 655^2 + 566^2 .

It is a cyclic number.

It is not a de Polignac number, because 749381 - 2¹⁴ = 732997 is a prime.

It is a super-2 number, since 2×749381² = 1123143766322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749383) 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, 386 + ... + 1283.

It is an arithmetic number, because the mean of its divisors is an integer number (187875).

2⁷⁴⁹³⁸¹ is an apocalyptic number.

It is an amenable number.

749381 is a deficient number, since it is larger than the sum of its proper divisors (2119).

749381 is a wasteful number, since it uses less digits than its factorization.

749381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118.

The product of its digits is 6048, while the sum is 32.

The square root of 749381 is about 865.6679501980. The cubic root of 749381 is about 90.8310272586.

The spelling of 749381 in words is "seven hundred forty-nine thousand, three hundred eighty-one".