29400913985 has 4 divisors (see below), whose sum is σ = 35281096788. Its totient is φ = 23520731184.

The previous prime is 29400913939. The next prime is 29400913987. The reversal of 29400913985 is 58931900492.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17943138304 + 11457775681 = 133952^2 + 107041^2 .

It is a cyclic number.

It is not a de Polignac number, because 29400913985 - 2³⁰ = 28327172161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29400913987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2940091394 + ... + 2940091403.

It is an arithmetic number, because the mean of its divisors is an integer number (8820274197).

Almost surely, 2^29400913985 is an apocalyptic number.

It is an amenable number.

29400913985 is a deficient number, since it is larger than the sum of its proper divisors (5880182803).

29400913985 is an equidigital number, since it uses as much as digits as its factorization.

29400913985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880182802.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 29400913985 in words is "twenty-nine billion, four hundred million, nine hundred thirteen thousand, nine hundred eighty-five".