743940 has 36 divisors (see below), whose sum is σ = 2257164. Its totient is φ = 198336.

The previous prime is 743933. The next prime is 743947. The reversal of 743940 is 49347.

It is an interprime number because it is at equal distance from previous prime (743933) and next prime (743947).

It can be written as a sum of positive squares in 2 ways, for example, as 412164 + 331776 = 642^2 + 576^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (743947) by changing a digit.

743940 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1887 + ... + 2246.

It is an arithmetic number, because the mean of its divisors is an integer number (62699).

2⁷⁴³⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

743940 is an abundant number, since it is smaller than the sum of its proper divisors (1513224).

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

743940 is a wasteful number, since it uses less digits than its factorization.

743940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4148 (or 4143 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 743940 is about 862.5195649955. The cubic root of 743940 is about 90.6106620202.

The spelling of 743940 in words is "seven hundred forty-three thousand, nine hundred forty".