407389 has 4 divisors (see below), whose sum is σ = 409024. Its totient is φ = 405756.

The previous prime is 407383. The next prime is 407401. The reversal of 407389 is 983704.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 407389 - 2⁵ = 407357 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 407389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357 + ... + 970.

It is an arithmetic number, because the mean of its divisors is an integer number (102256).

2⁴⁰⁷³⁸⁹ is an apocalyptic number.

It is an amenable number.

407389 is a deficient number, since it is larger than the sum of its proper divisors (1635).

407389 is a wasteful number, since it uses less digits than its factorization.

407389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634.

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

The square root of 407389 is about 638.2703189088. The cubic root of 407389 is about 74.1315531859.

The spelling of 407389 in words is "four hundred seven thousand, three hundred eighty-nine".