70447399 has 8 divisors (see below), whose sum is σ = 77613840. Its totient is φ = 63408000.

The previous prime is 70447369. The next prime is 70447411. The reversal of 70447399 is 99374407.

It is a happy number.

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 70447399 - 2⁷ = 70447271 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 (70447309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30594 + ... + 32815.

It is an arithmetic number, because the mean of its divisors is an integer number (9701730).

Almost surely, 2^70447399 is an apocalyptic number.

70447399 is a deficient number, since it is larger than the sum of its proper divisors (7166441).

70447399 is a wasteful number, since it uses less digits than its factorization.

70447399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63521.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 70447399 is about 8393.2948834174. The cubic root of 70447399 is about 413.0046940392.

The spelling of 70447399 in words is "seventy million, four hundred forty-seven thousand, three hundred ninety-nine".