64238493 has 8 divisors (see below), whose sum is σ = 93437856. Its totient is φ = 38932400.

The previous prime is 64238483. The next prime is 64238501. The reversal of 64238493 is 39483246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64238493 - 2⁴ = 64238477 is a prime.

It is a super-2 number, since 2×64238493² = 8253167965822098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64238423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 973278 + ... + 973343.

It is an arithmetic number, because the mean of its divisors is an integer number (11679732).

Almost surely, 2^64238493 is an apocalyptic number.

It is an amenable number.

64238493 is a deficient number, since it is larger than the sum of its proper divisors (29199363).

64238493 is a wasteful number, since it uses less digits than its factorization.

64238493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946635.

The product of its digits is 124416, while the sum is 39.

The square root of 64238493 is about 8014.8919518606. The cubic root of 64238493 is about 400.4962445155.

The spelling of 64238493 in words is "sixty-four million, two hundred thirty-eight thousand, four hundred ninety-three".