2633940421 has 4 divisors (see below), whose sum is σ = 3010217632. Its totient is φ = 2257663212.

The previous prime is 2633940403. The next prime is 2633940433. The reversal of 2633940421 is 1240493362.

It is a happy number.

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 not a de Polignac number, because 2633940421 - 2¹³ = 2633932229 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 (2633940401) 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, 188138595 + ... + 188138608.

It is an arithmetic number, because the mean of its divisors is an integer number (752554408).

Almost surely, 2^2633940421 is an apocalyptic number.

It is an amenable number.

2633940421 is a deficient number, since it is larger than the sum of its proper divisors (376277211).

2633940421 is an equidigital number, since it uses as much as digits as its factorization.

2633940421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376277210.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 2633940421 is about 51321.9292408226. The cubic root of 2633940421 is about 1381.0264052364.

The spelling of 2633940421 in words is "two billion, six hundred thirty-three million, nine hundred forty thousand, four hundred twenty-one".