215413389 has 12 divisors (see below), whose sum is σ = 321190272. Its totient is φ = 138976200.

The previous prime is 215413351. The next prime is 215413397. The reversal of 215413389 is 983314512.

215413389 is a `hidden beast` number, since 2 + 1 + 541 + 33 + 89 = 666.

It is not a de Polignac number, because 215413389 - 2⁹ = 215412877 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215413309) 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, 385767 + ... + 386324.

It is an arithmetic number, because the mean of its divisors is an integer number (26765856).

Almost surely, 2^215413389 is an apocalyptic number.

It is an amenable number.

215413389 is a deficient number, since it is larger than the sum of its proper divisors (105776883).

215413389 is a wasteful number, since it uses less digits than its factorization.

215413389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772128 (or 772125 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 215413389 is about 14676.9679770721. The cubic root of 215413389 is about 599.4563492218.

The spelling of 215413389 in words is "two hundred fifteen million, four hundred thirteen thousand, three hundred eighty-nine".