468397639 has 2 divisors, whose sum is σ = 468397640. Its totient is φ = 468397638.

The previous prime is 468397627. The next prime is 468397661. The reversal of 468397639 is 936793864.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 468397639 - 2⁷ = 468397511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 468397639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (468397609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 234198819 + 234198820.

It is an arithmetic number, because the mean of its divisors is an integer number (234198820).

Almost surely, 2^468397639 is an apocalyptic number.

468397639 is a deficient number, since it is larger than the sum of its proper divisors (1).

468397639 is an equidigital number, since it uses as much as digits as its factorization.

468397639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 55.

The square root of 468397639 is about 21642.4961360745. The cubic root of 468397639 is about 776.6134345762.

The spelling of 468397639 in words is "four hundred sixty-eight million, three hundred ninety-seven thousand, six hundred thirty-nine".