69442471 has 4 divisors (see below), whose sum is σ = 79362832. Its totient is φ = 59522112.

The previous prime is 69442427. The next prime is 69442481. The reversal of 69442471 is 17424496.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 69442471 - 2⁹ = 69441959 is a prime.

It is a super-3 number, since 3×69442471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69442471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69442411) 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, 4960170 + ... + 4960183.

It is an arithmetic number, because the mean of its divisors is an integer number (19840708).

Almost surely, 2^69442471 is an apocalyptic number.

69442471 is a deficient number, since it is larger than the sum of its proper divisors (9920361).

69442471 is an equidigital number, since it uses as much as digits as its factorization.

69442471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9920360.

The product of its digits is 48384, while the sum is 37.

The square root of 69442471 is about 8333.2149258254. The cubic root of 69442471 is about 411.0314521388.

The spelling of 69442471 in words is "sixty-nine million, four hundred forty-two thousand, four hundred seventy-one".