738921 has 8 divisors (see below), whose sum is σ = 1028160. Its totient is φ = 471152.

The previous prime is 738919. The next prime is 738923. The reversal of 738921 is 129837.

It is a happy number.

738921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (738919) and next prime (738923).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 738921 - 2¹ = 738919 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 738921.

It is not an unprimeable number, because it can be changed into a prime (738923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5286 + ... + 5423.

It is an arithmetic number, because the mean of its divisors is an integer number (128520).

2⁷³⁸⁹²¹ is an apocalyptic number.

It is an amenable number.

738921 is a deficient number, since it is larger than the sum of its proper divisors (289239).

738921 is a wasteful number, since it uses less digits than its factorization.

738921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10735.

The product of its digits is 3024, while the sum is 30.

The square root of 738921 is about 859.6051419111. The cubic root of 738921 is about 90.4064334185.

The spelling of 738921 in words is "seven hundred thirty-eight thousand, nine hundred twenty-one".