70819449 has 4 divisors (see below), whose sum is σ = 94425936. Its totient is φ = 47212964.

The previous prime is 70819439. The next prime is 70819451. The reversal of 70819449 is 94491807.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70819449 - 2⁸ = 70819193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70819449.

It is not an unprimeable number, because it can be changed into a prime (70819439) 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, 11803239 + ... + 11803244.

It is an arithmetic number, because the mean of its divisors is an integer number (23606484).

Almost surely, 2^70819449 is an apocalyptic number.

It is an amenable number.

70819449 is a deficient number, since it is larger than the sum of its proper divisors (23606487).

70819449 is a wasteful number, since it uses less digits than its factorization.

70819449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23606486.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 70819449 is about 8415.4292225649. The cubic root of 70819449 is about 413.7304775642.

The spelling of 70819449 in words is "seventy million, eight hundred nineteen thousand, four hundred forty-nine".