100440629 has 2 divisors, whose sum is σ = 100440630. Its totient is φ = 100440628.

The previous prime is 100440577. The next prime is 100440643. The reversal of 100440629 is 926044001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79299025 + 21141604 = 8905^2 + 4598^2 .

It is a cyclic number.

It is not a de Polignac number, because 100440629 - 2¹² = 100436533 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 100440598 and 100440607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100440649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50220314 + 50220315.

It is an arithmetic number, because the mean of its divisors is an integer number (50220315).

Almost surely, 2^100440629 is an apocalyptic number.

It is an amenable number.

100440629 is a deficient number, since it is larger than the sum of its proper divisors (1).

100440629 is an equidigital number, since it uses as much as digits as its factorization.

100440629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 100440629 is about 10022.0072340824. The cubic root of 100440629 is about 464.8396240399.

The spelling of 100440629 in words is "one hundred million, four hundred forty thousand, six hundred twenty-nine".