215120093 has 4 divisors (see below), whose sum is σ = 216814080. Its totient is φ = 213426108.

The previous prime is 215120089. The next prime is 215120117. The reversal of 215120093 is 390021512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 215120093 - 2² = 215120089 is a prime.

It is a super-3 number, since 3×215120093³ (a number of 26 digits) contains 333 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 (215120063) 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, 846803 + ... + 847056.

It is an arithmetic number, because the mean of its divisors is an integer number (54203520).

Almost surely, 2^215120093 is an apocalyptic number.

It is an amenable number.

215120093 is a deficient number, since it is larger than the sum of its proper divisors (1693987).

215120093 is a wasteful number, since it uses less digits than its factorization.

215120093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693986.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 215120093 is about 14666.9728642280. The cubic root of 215120093 is about 599.1841624810.

The spelling of 215120093 in words is "two hundred fifteen million, one hundred twenty thousand, ninety-three".