213376447 has 6 divisors (see below), whose sum is σ = 219300648. Its totient is φ = 207608184.

The previous prime is 213376433. The next prime is 213376481. The reversal of 213376447 is 744673312.

It is a de Polignac number, because none of the positive numbers 2^k-213376447 is a prime.

It is a super-4 number, since 4×213376447⁴ (a number of 34 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213376417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76563 + ... + 79300.

It is an arithmetic number, because the mean of its divisors is an integer number (36550108).

Almost surely, 2^213376447 is an apocalyptic number.

213376447 is a deficient number, since it is larger than the sum of its proper divisors (5924201).

213376447 is an equidigital number, since it uses as much as digits as its factorization.

213376447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155937 (or 155900 counting only the distinct ones).

The product of its digits is 84672, while the sum is 37.

The square root of 213376447 is about 14607.4106877297. The cubic root of 213376447 is about 597.5608822027.

The spelling of 213376447 in words is "two hundred thirteen million, three hundred seventy-six thousand, four hundred forty-seven".