8935478949 has 4 divisors (see below), whose sum is σ = 11913971936. Its totient is φ = 5956985964.

The previous prime is 8935478941. The next prime is 8935478957. The reversal of 8935478949 is 9498745398.

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 an interprime number because it is at equal distance from previous prime (8935478941) and next prime (8935478957).

It is not a de Polignac number, because 8935478949 - 2³ = 8935478941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8935478949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8935478941) 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, 1489246489 + ... + 1489246494.

It is an arithmetic number, because the mean of its divisors is an integer number (2978492984).

Almost surely, 2^8935478949 is an apocalyptic number.

It is an amenable number.

8935478949 is a deficient number, since it is larger than the sum of its proper divisors (2978492987).

8935478949 is a wasteful number, since it uses less digits than its factorization.

8935478949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978492986.

The product of its digits is 78382080, while the sum is 66.

The square root of 8935478949 is about 94527.6623481190. The cubic root of 8935478949 is about 2075.1011862593.

It can be divided in two parts, 893547 and 8949, that added together give a triangular number (902496 = T₁₃₄₃).

The spelling of 8935478949 in words is "eight billion, nine hundred thirty-five million, four hundred seventy-eight thousand, nine hundred forty-nine".