749490 has 64 divisors (see below), whose sum is σ = 2128896. Its totient is φ = 165312.

The previous prime is 749471. The next prime is 749543. The reversal of 749490 is 94947.

749490 is nontrivially palindromic in base 8.

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

It is a nialpdrome in base 15.

It is an unprimeable 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 31 ways as a sum of consecutive naturals, for example, 8989 + ... + 9071.

It is an arithmetic number, because the mean of its divisors is an integer number (33264).

2⁷⁴⁹⁴⁹⁰ is an apocalyptic number.

749490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 749490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1064448).

749490 is an abundant number, since it is smaller than the sum of its proper divisors (1379406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

749490 is a wasteful number, since it uses less digits than its factorization.

749490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 749490 is about 865.7309050739. The cubic root of 749490 is about 90.8354309385.

The spelling of 749490 in words is "seven hundred forty-nine thousand, four hundred ninety".