4167249021 has 12 divisors (see below), whose sum is σ = 6482387548. Its totient is φ = 2564460864.

The previous prime is 4167249017. The next prime is 4167249101. The reversal of 4167249021 is 1209427614.

It is a happy number.

4167249021 is a `hidden beast` number, since 4 + 167 + 2 + 490 + 2 + 1 = 666.

4167249021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2014752996 + 2152496025 = 44886^2 + 46395^2 .

It is not a de Polignac number, because 4167249021 - 2² = 4167249017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4167249521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17808640 + ... + 17808873.

Almost surely, 2^4167249021 is an apocalyptic number.

It is an amenable number.

4167249021 is a deficient number, since it is larger than the sum of its proper divisors (2315138527).

4167249021 is a wasteful number, since it uses less digits than its factorization.

4167249021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35617532 (or 35617529 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 4167249021 is about 64554.2331764540. The cubic root of 4167249021 is about 1609.2239384406.

The spelling of 4167249021 in words is "four billion, one hundred sixty-seven million, two hundred forty-nine thousand, twenty-one".