70909449 has 16 divisors (see below), whose sum is σ = 102501504. Its totient is φ = 43344000.

The previous prime is 70909439. The next prime is 70909453. The reversal of 70909449 is 94490907.

It is not a de Polignac number, because 70909449 - 2¹⁵ = 70876681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70909449.

It is not an unprimeable number, because it can be changed into a prime (70909409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132 + ... + 11909.

It is an arithmetic number, because the mean of its divisors is an integer number (6406344).

Almost surely, 2^70909449 is an apocalyptic number.

It is an amenable number.

70909449 is a deficient number, since it is larger than the sum of its proper divisors (31592055).

70909449 is a wasteful number, since it uses less digits than its factorization.

70909449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12208.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 70909449 is about 8420.7748455828. The cubic root of 70909449 is about 413.9056647532.

The spelling of 70909449 in words is "seventy million, nine hundred nine thousand, four hundred forty-nine".