100390 has 8 divisors (see below), whose sum is σ = 180720. Its totient is φ = 40152.

The previous prime is 100379. The next prime is 100391. The reversal of 100390 is 93001.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 100390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100391) 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, 5010 + ... + 5029.

It is an arithmetic number, because the mean of its divisors is an integer number (22590).

2¹⁰⁰³⁹⁰ is an apocalyptic number.

100390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100390 is a deficient number, since it is larger than the sum of its proper divisors (80330).

100390 is a wasteful number, since it uses less digits than its factorization.

100390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10046.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 100390 is about 316.8438101021. The cubic root of 100390 is about 46.4761507176.

Adding to 100390 its reverse (93001), we get a palindrome (193391).

The spelling of 100390 in words is "one hundred thousand, three hundred ninety".