109628401 has 2 divisors, whose sum is σ = 109628402. Its totient is φ = 109628400.

The previous prime is 109628377. The next prime is 109628437. The reversal of 109628401 is 104826901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73616400 + 36012001 = 8580^2 + 6001^2 .

It is an emirp because it is prime and its reverse (104826901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109628401 - 2¹⁷ = 109497329 is a prime.

It is not a weakly prime, because it can be changed into another prime (109626401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54814200 + 54814201.

It is an arithmetic number, because the mean of its divisors is an integer number (54814201).

Almost surely, 2^109628401 is an apocalyptic number.

It is an amenable number.

109628401 is a deficient number, since it is larger than the sum of its proper divisors (1).

109628401 is an equidigital number, since it uses as much as digits as its factorization.

109628401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 109628401 is about 10470.3582078170. The cubic root of 109628401 is about 478.6018355458.

The spelling of 109628401 in words is "one hundred nine million, six hundred twenty-eight thousand, four hundred one".