7449878499 has 16 divisors (see below), whose sum is σ = 12019972608. Its totient is φ = 4006657152.

The previous prime is 7449878459. The next prime is 7449878543. The reversal of 7449878499 is 9948789447.

It is not a de Polignac number, because 7449878499 - 2¹⁶ = 7449812963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7449878419) 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, 10433647 + ... + 10434360.

It is an arithmetic number, because the mean of its divisors is an integer number (751248288).

Almost surely, 2^7449878499 is an apocalyptic number.

7449878499 is a deficient number, since it is larger than the sum of its proper divisors (4570094109).

7449878499 is a wasteful number, since it uses less digits than its factorization.

7449878499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20868034.

The product of its digits is 146313216, while the sum is 69.

The square root of 7449878499 is about 86312.6786688955. The cubic root of 7449878499 is about 1953.0636478201.

The spelling of 7449878499 in words is "seven billion, four hundred forty-nine million, eight hundred seventy-eight thousand, four hundred ninety-nine".