4492651221 has 12 divisors (see below), whose sum is σ = 6499677600. Its totient is φ = 2990350440.

The previous prime is 4492651211. The next prime is 4492651231. The reversal of 4492651221 is 1221562944.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4492651211) and next prime (4492651231).

It is not a de Polignac number, because 4492651221 - 2¹⁵ = 4492618453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4492651211) 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, 389871 + ... + 401228.

It is an arithmetic number, because the mean of its divisors is an integer number (541639800).

Almost surely, 2^4492651221 is an apocalyptic number.

It is an amenable number.

4492651221 is a deficient number, since it is larger than the sum of its proper divisors (2007026379).

4492651221 is a wasteful number, since it uses less digits than its factorization.

4492651221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791736 (or 791733 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 4492651221 is about 67027.2423794982. The cubic root of 4492651221 is about 1650.0644261345.

The spelling of 4492651221 in words is "four billion, four hundred ninety-two million, six hundred fifty-one thousand, two hundred twenty-one".