7849464949 has 4 divisors (see below), whose sum is σ = 7850732940. Its totient is φ = 7848196960.

The previous prime is 7849464929. The next prime is 7849464967. The reversal of 7849464949 is 9494649487.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9494649487 = 181 ⋅52456627.

It can be written as a sum of positive squares in 2 ways, for example, as 1861491025 + 5987973924 = 43145^2 + 77382^2 .

It is a cyclic number.

It is not a de Polignac number, because 7849464949 - 2⁹ = 7849464437 is a prime.

It is a super-2 number, since 2×7849464949² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7849464919) 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, 624664 + ... + 637105.

It is an arithmetic number, because the mean of its divisors is an integer number (1962683235).

Almost surely, 2^7849464949 is an apocalyptic number.

It is an amenable number.

7849464949 is a deficient number, since it is larger than the sum of its proper divisors (1267991).

7849464949 is a wasteful number, since it uses less digits than its factorization.

7849464949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267990.

The product of its digits is 62705664, while the sum is 64.

The square root of 7849464949 is about 88597.2062144174. The cubic root of 7849464949 is about 1987.3758960732.

The spelling of 7849464949 in words is "seven billion, eight hundred forty-nine million, four hundred sixty-four thousand, nine hundred forty-nine".