29640109 has 2 divisors, whose sum is σ = 29640110. Its totient is φ = 29640108.

The previous prime is 29640103. The next prime is 29640113. The reversal of 29640109 is 90104692.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16024009 + 13616100 = 4003^2 + 3690^2 .

It is a cyclic number.

It is not a de Polignac number, because 29640109 - 2¹¹ = 29638061 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29640103) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14820054 + 14820055.

It is an arithmetic number, because the mean of its divisors is an integer number (14820055).

Almost surely, 2^29640109 is an apocalyptic number.

It is an amenable number.

29640109 is a deficient number, since it is larger than the sum of its proper divisors (1).

29640109 is an equidigital number, since it uses as much as digits as its factorization.

29640109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 29640109 is about 5444.2730460549. The cubic root of 29640109 is about 309.4757319706.

The spelling of 29640109 in words is "twenty-nine million, six hundred forty thousand, one hundred nine".