29913993 has 12 divisors (see below), whose sum is σ = 44699460. Its totient is φ = 19254816.

The previous prime is 29913991. The next prime is 29913997. The reversal of 29913993 is 39931992.

It can be written as a sum of positive squares in 2 ways, for example, as 13046544 + 16867449 = 3612^2 + 4107^2 .

It is not a de Polignac number, because 29913993 - 2¹ = 29913991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29913991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57046 + ... + 57567.

It is an arithmetic number, because the mean of its divisors is an integer number (3724955).

Almost surely, 2^29913993 is an apocalyptic number.

It is an amenable number.

29913993 is a deficient number, since it is larger than the sum of its proper divisors (14785467).

29913993 is a wasteful number, since it uses less digits than its factorization.

29913993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114648 (or 114645 counting only the distinct ones).

The product of its digits is 118098, while the sum is 45.

The square root of 29913993 is about 5469.3686107265. The cubic root of 29913993 is about 310.4260288835.

The spelling of 29913993 in words is "twenty-nine million, nine hundred thirteen thousand, nine hundred ninety-three".