743990 has 32 divisors (see below), whose sum is σ = 1481760. Its totient is φ = 267264.

The previous prime is 743989. The next prime is 744019. The reversal of 743990 is 99347.

It is a happy number.

It is a super-2 number, since 2×743990² = 1107042240200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7622 + ... + 7718.

It is an arithmetic number, because the mean of its divisors is an integer number (46305).

2⁷⁴³⁹⁹⁰ is an apocalyptic number.

743990 is a deficient number, since it is larger than the sum of its proper divisors (737770).

743990 is a wasteful number, since it uses less digits than its factorization.

743990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176.

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

The square root of 743990 is about 862.5485493582. The cubic root of 743990 is about 90.6126919472.

The spelling of 743990 in words is "seven hundred forty-three thousand, nine hundred ninety".