268924639 has 4 divisors (see below), whose sum is σ = 270079056. Its totient is φ = 267770224.

The previous prime is 268924633. The next prime is 268924679. The reversal of 268924639 is 936429862.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936429862 = 2 ⋅468214931.

It is a cyclic number.

It is not a de Polignac number, because 268924639 - 2³ = 268924631 is a prime.

It is a super-2 number, since 2×268924639² = 144640922922560642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268924592 and 268924601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268924631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576859 + ... + 577324.

It is an arithmetic number, because the mean of its divisors is an integer number (67519764).

Almost surely, 2^268924639 is an apocalyptic number.

268924639 is a deficient number, since it is larger than the sum of its proper divisors (1154417).

268924639 is a wasteful number, since it uses less digits than its factorization.

268924639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154416.

The product of its digits is 1119744, while the sum is 49.

The square root of 268924639 is about 16398.9218852948. The cubic root of 268924639 is about 645.4711930622.

The spelling of 268924639 in words is "two hundred sixty-eight million, nine hundred twenty-four thousand, six hundred thirty-nine".