43787769949 has 32 divisors (see below), whose sum is σ = 58867522560. Its totient is φ = 31536086400.

The previous prime is 43787769947. The next prime is 43787769959. The reversal of 43787769949 is 94996778734.

43787769949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43787769949 - 2¹ = 43787769947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43787769943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 305019 + ... + 424984.

It is an arithmetic number, because the mean of its divisors is an integer number (1839610080).

Almost surely, 2^43787769949 is an apocalyptic number.

It is an amenable number.

43787769949 is a deficient number, since it is larger than the sum of its proper divisors (15079752611).

43787769949 is a wasteful number, since it uses less digits than its factorization.

43787769949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730081.

The product of its digits is 576108288, while the sum is 73.

The spelling of 43787769949 in words is "forty-three billion, seven hundred eighty-seven million, seven hundred sixty-nine thousand, nine hundred forty-nine".