407986 has 8 divisors (see below), whose sum is σ = 616860. Its totient is φ = 202368.

The previous prime is 407977. The next prime is 407993. The reversal of 407986 is 689704.

It can be written as a sum of positive squares in 2 ways, for example, as 403225 + 4761 = 635^2 + 69^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471 + ... + 1018.

2⁴⁰⁷⁹⁸⁶ is an apocalyptic number.

407986 is a deficient number, since it is larger than the sum of its proper divisors (208874).

407986 is a wasteful number, since it uses less digits than its factorization.

407986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 407986 is about 638.7378178877. The cubic root of 407986 is about 74.1677470420.

It can be divided in two parts, 40798 and 6, that added together give a palindrome (40804).

The spelling of 407986 in words is "four hundred seven thousand, nine hundred eighty-six".