2039887621 has 4 divisors (see below), whose sum is σ = 2087326912. Its totient is φ = 1992448332.

The previous prime is 2039887609. The next prime is 2039887627. The reversal of 2039887621 is 1267889302.

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.

It is a cyclic number.

It is not a de Polignac number, because 2039887621 - 2¹⁷ = 2039756549 is a prime.

It is a super-2 number, since 2×2039887621² = 8322283012618079282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2039887627) 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, 23719581 + ... + 23719666.

It is an arithmetic number, because the mean of its divisors is an integer number (521831728).

Almost surely, 2^2039887621 is an apocalyptic number.

It is an amenable number.

2039887621 is a deficient number, since it is larger than the sum of its proper divisors (47439291).

2039887621 is an equidigital number, since it uses as much as digits as its factorization.

2039887621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47439290.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 2039887621 is about 45165.1150889710. The cubic root of 2039887621 is about 1268.2418520271.

The spelling of 2039887621 in words is "two billion, thirty-nine million, eight hundred eighty-seven thousand, six hundred twenty-one".