29681941 has 2 divisors, whose sum is σ = 29681942. Its totient is φ = 29681940.

The previous prime is 29681893. The next prime is 29681947. The reversal of 29681941 is 14918692.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28313041 + 1368900 = 5321^2 + 1170^2 .

It is a cyclic number.

It is not a de Polignac number, because 29681941 - 2¹⁷ = 29550869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29681894 and 29681903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29681947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14840970 + 14840971.

It is an arithmetic number, because the mean of its divisors is an integer number (14840971).

Almost surely, 2^29681941 is an apocalyptic number.

It is an amenable number.

29681941 is a deficient number, since it is larger than the sum of its proper divisors (1).

29681941 is an equidigital number, since it uses as much as digits as its factorization.

29681941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 40.

The square root of 29681941 is about 5448.1135267173. The cubic root of 29681941 is about 309.6212544138.

The spelling of 29681941 in words is "twenty-nine million, six hundred eighty-one thousand, nine hundred forty-one".