70479391 has 4 divisors (see below), whose sum is σ = 70587000. Its totient is φ = 70371784.

The previous prime is 70479389. The next prime is 70479397. The reversal of 70479391 is 19397407.

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 70479391 - 2¹ = 70479389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70479397) 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, 52816 + ... + 54133.

It is an arithmetic number, because the mean of its divisors is an integer number (17646750).

Almost surely, 2^70479391 is an apocalyptic number.

70479391 is a deficient number, since it is larger than the sum of its proper divisors (107609).

70479391 is a wasteful number, since it uses less digits than its factorization.

70479391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107608.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 70479391 is about 8395.2004740804. The cubic root of 70479391 is about 413.0672033097.

The spelling of 70479391 in words is "seventy million, four hundred seventy-nine thousand, three hundred ninety-one".