214998917 has 16 divisors (see below), whose sum is σ = 261638400. Its totient is φ = 176265936.

The previous prime is 214998907. The next prime is 214998929. The reversal of 214998917 is 719899412.

214998917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 214998917 - 2¹² = 214994821 is a prime.

It is a super-2 number, since 2×214998917² = 92449068622345778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214998907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5738 + ... + 21515.

It is an arithmetic number, because the mean of its divisors is an integer number (16352400).

Almost surely, 2^214998917 is an apocalyptic number.

It is an amenable number.

214998917 is a deficient number, since it is larger than the sum of its proper divisors (46639483).

214998917 is an equidigital number, since it uses as much as digits as its factorization.

214998917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27297 (or 27283 counting only the distinct ones).

The product of its digits is 326592, while the sum is 50.

The square root of 214998917 is about 14662.8413685752. The cubic root of 214998917 is about 599.0716356031.

The spelling of 214998917 in words is "two hundred fourteen million, nine hundred ninety-eight thousand, nine hundred seventeen".