749858 has 4 divisors (see below), whose sum is σ = 1124790. Its totient is φ = 374928.

The previous prime is 749851. The next prime is 749863. The reversal of 749858 is 858947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 858947 = 157 ⋅5471.

It can be written as a sum of positive squares in only one way, i.e., 667489 + 82369 = 817^2 + 287^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187463 + ... + 187466.

2⁷⁴⁹⁸⁵⁸ is an apocalyptic number.

749858 is a deficient number, since it is larger than the sum of its proper divisors (374932).

749858 is a wasteful number, since it uses less digits than its factorization.

749858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374931.

The product of its digits is 80640, while the sum is 41.

The square root of 749858 is about 865.9434161653. The cubic root of 749858 is about 90.8502952547.

The spelling of 749858 in words is "seven hundred forty-nine thousand, eight hundred fifty-eight".