538893407 has 4 divisors (see below), whose sum is σ = 580346760. Its totient is φ = 497440056.

The previous prime is 538893403. The next prime is 538893431. The reversal of 538893407 is 704398835.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 538893407 - 2² = 538893403 is a prime.

It is a super-2 number, since 2×538893407² = 580812208216135298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538893403) 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, 20726657 + ... + 20726682.

It is an arithmetic number, because the mean of its divisors is an integer number (145086690).

Almost surely, 2^538893407 is an apocalyptic number.

538893407 is a deficient number, since it is larger than the sum of its proper divisors (41453353).

538893407 is a wasteful number, since it uses less digits than its factorization.

538893407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41453352.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 538893407 is about 23214.0777762116. The cubic root of 538893407 is about 813.7686535554.

The spelling of 538893407 in words is "five hundred thirty-eight million, eight hundred ninety-three thousand, four hundred seven".