109401629 has 4 divisors (see below), whose sum is σ = 109422684. Its totient is φ = 109380576.

The previous prime is 109401587. The next prime is 109401667. The reversal of 109401629 is 926104901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 926104901 = 71 ⋅13043731.

It can be written as a sum of positive squares in 2 ways, for example, as 45832900 + 63568729 = 6770^2 + 7973^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109401629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109401595 and 109401604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109401689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3479 + ... + 15195.

It is an arithmetic number, because the mean of its divisors is an integer number (27355671).

Almost surely, 2^109401629 is an apocalyptic number.

It is an amenable number.

109401629 is a deficient number, since it is larger than the sum of its proper divisors (21055).

109401629 is an equidigital number, since it uses as much as digits as its factorization.

109401629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21054.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 109401629 is about 10459.5233639014. The cubic root of 109401629 is about 478.2716035491.

The spelling of 109401629 in words is "one hundred nine million, four hundred one thousand, six hundred twenty-nine".