4149969947 has 4 divisors (see below), whose sum is σ = 4246480920. Its totient is φ = 4053458976.

The previous prime is 4149969893. The next prime is 4149969953. The reversal of 4149969947 is 7499699414.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7499699414 = 2 ⋅3749849707.

It is a cyclic number.

It is not a de Polignac number, because 4149969947 - 2¹² = 4149965851 is a prime.

It is a super-2 number, since 2×4149969947² = 34444501122006365618, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4149969947.

It is not an unprimeable number, because it can be changed into a prime (4149969847) 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, 48255422 + ... + 48255507.

It is an arithmetic number, because the mean of its divisors is an integer number (1061620230).

Almost surely, 2^4149969947 is an apocalyptic number.

4149969947 is a deficient number, since it is larger than the sum of its proper divisors (96510973).

4149969947 is an equidigital number, since it uses as much as digits as its factorization.

4149969947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96510972.

The product of its digits is 17635968, while the sum is 62.

The square root of 4149969947 is about 64420.2603766858. The cubic root of 4149969947 is about 1606.9966961526.

The spelling of 4149969947 in words is "four billion, one hundred forty-nine million, nine hundred sixty-nine thousand, nine hundred forty-seven".