738409 has 8 divisors (see below), whose sum is σ = 867008. Its totient is φ = 615600.

The previous prime is 738403. The next prime is 738421. The reversal of 738409 is 904837.

738409 = T₁₈₁ + T₁₈₂ + ... + T₂₁₇.

It is a happy number.

738409 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

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 738409 - 2³ = 738401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (738401) 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, 1167 + ... + 1684.

It is an arithmetic number, because the mean of its divisors is an integer number (108376).

2⁷³⁸⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

738409 is a deficient number, since it is larger than the sum of its proper divisors (128599).

738409 is a wasteful number, since it uses less digits than its factorization.

738409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 738409 is about 859.3072791499. The cubic root of 738409 is about 90.3855476544.

It can be divided in two parts, 7 and 38409, that added together give a 4-th power (38416 = 14⁴).

The spelling of 738409 in words is "seven hundred thirty-eight thousand, four hundred nine".