400502 has 8 divisors (see below), whose sum is σ = 614856. Its totient is φ = 195552.

The previous prime is 400481. The next prime is 400523. The reversal of 400502 is 205004.

It is an interprime number because it is at equal distance from previous prime (400481) and next prime (400523).

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

It is a congruent number.

It is an unprimeable number.

400502 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, 2243 + ... + 2414.

It is an arithmetic number, because the mean of its divisors is an integer number (76857).

2⁴⁰⁰⁵⁰² is an apocalyptic number.

400502 is a deficient number, since it is larger than the sum of its proper divisors (214354).

400502 is a wasteful number, since it uses less digits than its factorization.

400502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702.

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 400502 is about 632.8522734414. The cubic root of 400502 is about 73.7114401510.

Adding to 400502 its reverse (205004), we get a palindrome (605506).

The spelling of 400502 in words is "four hundred thousand, five hundred two".