29998917 has 40 divisors (see below), whose sum is σ = 49871360. Its totient is φ = 17845920.

The previous prime is 29998909. The next prime is 29998937. The reversal of 29998917 is 71989992.

It is not a de Polignac number, because 29998917 - 2³ = 29998909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29998937) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 32184 + ... + 33102.

It is an arithmetic number, because the mean of its divisors is an integer number (1246784).

Almost surely, 2^29998917 is an apocalyptic number.

29998917 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

29998917 is a deficient number, since it is larger than the sum of its proper divisors (19872443).

29998917 is a wasteful number, since it uses less digits than its factorization.

29998917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975 (or 966 counting only the distinct ones).

The product of its digits is 734832, while the sum is 54.

The square root of 29998917 is about 5477.1267102378. The cubic root of 29998917 is about 310.7195115139.

The spelling of 29998917 in words is "twenty-nine million, nine hundred ninety-eight thousand, nine hundred seventeen".