29920417 has 2 divisors, whose sum is σ = 29920418. Its totient is φ = 29920416.

The previous prime is 29920411. The next prime is 29920427. The reversal of 29920417 is 71402992.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15358561 + 14561856 = 3919^2 + 3816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29920417 is a prime.

It is not a weakly prime, because it can be changed into another prime (29920411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14960208 + 14960209.

It is an arithmetic number, because the mean of its divisors is an integer number (14960209).

Almost surely, 2^29920417 is an apocalyptic number.

It is an amenable number.

29920417 is a deficient number, since it is larger than the sum of its proper divisors (1).

29920417 is an equidigital number, since it uses as much as digits as its factorization.

29920417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 29920417 is about 5469.9558499132. The cubic root of 29920417 is about 310.4482485192.

The spelling of 29920417 in words is "twenty-nine million, nine hundred twenty thousand, four hundred seventeen".