401386 has 8 divisors (see below), whose sum is σ = 608580. Its totient is φ = 198528.

The previous prime is 401381. The next prime is 401393. The reversal of 401386 is 683104.

It can be written as a sum of positive squares in 2 ways, for example, as 383161 + 18225 = 619^2 + 135^2 .

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

It is a super-2 number, since 2×401386² = 322221441992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401381) by changing a digit.

401386 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 3 ways as a sum of consecutive naturals, for example, 841 + ... + 1228.

2⁴⁰¹³⁸⁶ is an apocalyptic number.

401386 is a deficient number, since it is larger than the sum of its proper divisors (207194).

401386 is a wasteful number, since it uses less digits than its factorization.

401386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 401386 is about 633.5503137084. The cubic root of 401386 is about 73.7656329974.

It can be divided in two parts, 401 and 386, that added together give a palindrome (787).

The spelling of 401386 in words is "four hundred one thousand, three hundred eighty-six".