2154504439 has 2 divisors, whose sum is σ = 2154504440. Its totient is φ = 2154504438.

The previous prime is 2154504421. The next prime is 2154504481. The reversal of 2154504439 is 9344054512.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2154504439 - 2¹⁷ = 2154373367 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2154504398 and 2154504407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154504409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077252219 + 1077252220.

It is an arithmetic number, because the mean of its divisors is an integer number (1077252220).

Almost surely, 2^2154504439 is an apocalyptic number.

2154504439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154504439 is an equidigital number, since it uses as much as digits as its factorization.

2154504439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 2154504439 is about 46416.6396780293. The cubic root of 2154504439 is about 1291.5636026671.

The spelling of 2154504439 in words is "two billion, one hundred fifty-four million, five hundred four thousand, four hundred thirty-nine".