4154639 has 2 divisors, whose sum is σ = 4154640. Its totient is φ = 4154638.

The previous prime is 4154629. The next prime is 4154641. The reversal of 4154639 is 9364514.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4154639 - 2⁸ = 4154383 is a prime.

It is a super-2 number, since 2×4154639² = 34522050440642, which contains 22 as substring.

Together with 4154641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4154629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2077319 + 2077320.

It is an arithmetic number, because the mean of its divisors is an integer number (2077320).

Almost surely, 2^4154639 is an apocalyptic number.

4154639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4154639 is an equidigital number, since it uses as much as digits as its factorization.

4154639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 4154639 is about 2038.2931585030. The cubic root of 4154639 is about 160.7599137513.

The spelling of 4154639 in words is "four million, one hundred fifty-four thousand, six hundred thirty-nine".