109985401 has 2 divisors, whose sum is σ = 109985402. Its totient is φ = 109985400.

The previous prime is 109985363. The next prime is 109985419. The reversal of 109985401 is 104589901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109935225 + 50176 = 10485^2 + 224^2 .

It is a cyclic number.

It is not a de Polignac number, because 109985401 - 2²⁵ = 76430969 is a prime.

It is not a weakly prime, because it can be changed into another prime (109985101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54992700 + 54992701.

It is an arithmetic number, because the mean of its divisors is an integer number (54992701).

Almost surely, 2^109985401 is an apocalyptic number.

It is an amenable number.

109985401 is a deficient number, since it is larger than the sum of its proper divisors (1).

109985401 is an equidigital number, since it uses as much as digits as its factorization.

109985401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 109985401 is about 10487.3924785907. The cubic root of 109985401 is about 479.1207878174.

The spelling of 109985401 in words is "one hundred nine million, nine hundred eighty-five thousand, four hundred one".