70909447 has 8 divisors (see below), whose sum is σ = 81093152. Its totient is φ = 60739200.

The previous prime is 70909439. The next prime is 70909453. The reversal of 70909447 is 74490907.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70909447 - 2³ = 70909439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70909247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13747 + ... + 18187.

It is an arithmetic number, because the mean of its divisors is an integer number (10136644).

Almost surely, 2^70909447 is an apocalyptic number.

70909447 is a deficient number, since it is larger than the sum of its proper divisors (10183705).

70909447 is a wasteful number, since it uses less digits than its factorization.

70909447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6729.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 70909447 is about 8420.7747268289. The cubic root of 70909447 is about 413.9056608618.

The spelling of 70909447 in words is "seventy million, nine hundred nine thousand, four hundred forty-seven".