4149028649 has 4 divisors (see below), whose sum is σ = 4172207760. Its totient is φ = 4125849540.

The previous prime is 4149028607. The next prime is 4149028669. The reversal of 4149028649 is 9468209414.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9468209414 = 2 ⋅4734104707.

It is a cyclic number.

It is not a de Polignac number, because 4149028649 - 2⁸ = 4149028393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4149028669) 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, 11589287 + ... + 11589644.

It is an arithmetic number, because the mean of its divisors is an integer number (1043051940).

Almost surely, 2^4149028649 is an apocalyptic number.

It is an amenable number.

4149028649 is a deficient number, since it is larger than the sum of its proper divisors (23179111).

4149028649 is a wasteful number, since it uses less digits than its factorization.

4149028649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23179110.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 4149028649 is about 64412.9540465270. The cubic root of 4149028649 is about 1606.8751870671.

The spelling of 4149028649 in words is "four billion, one hundred forty-nine million, twenty-eight thousand, six hundred forty-nine".