4453960621 has 16 divisors (see below), whose sum is σ = 5031293760. Its totient is φ = 3905637120.

The previous prime is 4453960591. The next prime is 4453960661. The reversal of 4453960621 is 1260693544.

It is not a de Polignac number, because 4453960621 - 2¹³ = 4453952429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4453960661) 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, 352021 + ... + 364453.

It is an arithmetic number, because the mean of its divisors is an integer number (314455860).

Almost surely, 2^4453960621 is an apocalyptic number.

It is an amenable number.

4453960621 is a deficient number, since it is larger than the sum of its proper divisors (577333139).

4453960621 is a wasteful number, since it uses less digits than its factorization.

4453960621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13596.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 4453960621 is about 66737.9998276844. Note that the first 3 decimals coincide. The cubic root of 4453960621 is about 1645.3139918544.

The spelling of 4453960621 in words is "four billion, four hundred fifty-three million, nine hundred sixty thousand, six hundred twenty-one".