215090469 has 48 divisors (see below), whose sum is σ = 365601600. Its totient is φ = 120441600.

The previous prime is 215090461. The next prime is 215090479. The reversal of 215090469 is 964090512.

It is not a de Polignac number, because 215090469 - 2³ = 215090461 is a prime.

It is a super-2 number, since 2×215090469² = 92527819709279922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215090461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75727 + ... + 78515.

It is an arithmetic number, because the mean of its divisors is an integer number (7616700).

Almost surely, 2^215090469 is an apocalyptic number.

It is an amenable number.

215090469 is a deficient number, since it is larger than the sum of its proper divisors (150511131).

215090469 is a wasteful number, since it uses less digits than its factorization.

215090469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866 (or 2863 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 215090469 is about 14665.9629414505. The cubic root of 215090469 is about 599.1566568426.

The spelling of 215090469 in words is "two hundred fifteen million, ninety thousand, four hundred sixty-nine".