100900390 has 16 divisors (see below), whose sum is σ = 181762560. Its totient is φ = 40328640.

The previous prime is 100900351. The next prime is 100900391. The reversal of 100900390 is 93009001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100900391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12955 + ... + 19225.

It is an arithmetic number, because the mean of its divisors is an integer number (11360160).

Almost surely, 2^100900390 is an apocalyptic number.

100900390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100900390 is a deficient number, since it is larger than the sum of its proper divisors (80862170).

100900390 is a wasteful number, since it uses less digits than its factorization.

100900390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7887.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 100900390 is about 10044.9186158973. The cubic root of 100900390 is about 465.5478031563.

Adding to 100900390 its reverse (93009001), we get a palindrome (193909391).

The spelling of 100900390 in words is "one hundred million, nine hundred thousand, three hundred ninety".