48668639 has 2 divisors, whose sum is σ = 48668640. Its totient is φ = 48668638.

The previous prime is 48668611. The next prime is 48668651. The reversal of 48668639 is 93686684.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 48668639 - 2¹⁶ = 48603103 is a prime.

It is a super-2 number, since 2×48668639² = 4737272844224642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48668689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24334319 + 24334320.

It is an arithmetic number, because the mean of its divisors is an integer number (24334320).

Almost surely, 2^48668639 is an apocalyptic number.

48668639 is a deficient number, since it is larger than the sum of its proper divisors (1).

48668639 is an equidigital number, since it uses as much as digits as its factorization.

48668639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 50.

The square root of 48668639 is about 6976.2912066513. The cubic root of 48668639 is about 365.1038398494.

The spelling of 48668639 in words is "forty-eight million, six hundred sixty-eight thousand, six hundred thirty-nine".