749390 has 16 divisors (see below), whose sum is σ = 1361232. Its totient is φ = 297024.

The previous prime is 749383. The next prime is 749393. The reversal of 749390 is 93947.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749393) by changing a digit.

749390 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1097 + ... + 1643.

It is an arithmetic number, because the mean of its divisors is an integer number (85077).

2⁷⁴⁹³⁹⁰ is an apocalyptic number.

749390 is a deficient number, since it is larger than the sum of its proper divisors (611842).

749390 is a wasteful number, since it uses less digits than its factorization.

749390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 749390 is about 865.6731484804. The cubic root of 749390 is about 90.8313908814.

The spelling of 749390 in words is "seven hundred forty-nine thousand, three hundred ninety".