215412479 has 2 divisors, whose sum is σ = 215412480. Its totient is φ = 215412478.

The previous prime is 215412427. The next prime is 215412541. The reversal of 215412479 is 974214512.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215412479 is a prime.

It is a super-2 number, since 2×215412479² = 92805072217850882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215412179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107706239 + 107706240.

It is an arithmetic number, because the mean of its divisors is an integer number (107706240).

Almost surely, 2^215412479 is an apocalyptic number.

215412479 is a deficient number, since it is larger than the sum of its proper divisors (1).

215412479 is an equidigital number, since it uses as much as digits as its factorization.

215412479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 215412479 is about 14676.9369760860. The cubic root of 215412479 is about 599.4555050991.

The spelling of 215412479 in words is "two hundred fifteen million, four hundred twelve thousand, four hundred seventy-nine".