107890906 has 4 divisors (see below), whose sum is σ = 161836362. Its totient is φ = 53945452.

The previous prime is 107890903. The next prime is 107890921. The reversal of 107890906 is 609098701.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 104223681 + 3667225 = 10209^2 + 1915^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (107890903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26972725 + ... + 26972728.

Almost surely, 2^107890906 is an apocalyptic number.

107890906 is a deficient number, since it is larger than the sum of its proper divisors (53945456).

107890906 is an equidigital number, since it uses as much as digits as its factorization.

107890906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53945455.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 107890906 is about 10387.0547317322. The cubic root of 107890906 is about 476.0599134857.

The spelling of 107890906 in words is "one hundred seven million, eight hundred ninety thousand, nine hundred six".