29420861 has 2 divisors, whose sum is σ = 29420862. Its totient is φ = 29420860.

The previous prime is 29420857. The next prime is 29420869. The reversal of 29420861 is 16802492.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26112100 + 3308761 = 5110^2 + 1819^2 .

It is a cyclic number.

It is not a de Polignac number, because 29420861 - 2² = 29420857 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29420869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14710430 + 14710431.

It is an arithmetic number, because the mean of its divisors is an integer number (14710431).

Almost surely, 2^29420861 is an apocalyptic number.

It is an amenable number.

29420861 is a deficient number, since it is larger than the sum of its proper divisors (1).

29420861 is an equidigital number, since it uses as much as digits as its factorization.

29420861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 29420861 is about 5424.1000175144. The cubic root of 29420861 is about 308.7107783448.

The spelling of 29420861 in words is "twenty-nine million, four hundred twenty thousand, eight hundred sixty-one".