538994401 has 8 divisors (see below), whose sum is σ = 622581984. Its totient is φ = 461171520.

The previous prime is 538994399. The next prime is 538994437. The reversal of 538994401 is 104499835.

It is a happy number.

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 538994401 - 2¹ = 538994399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538994461) 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, 1440975 + ... + 1441348.

It is an arithmetic number, because the mean of its divisors is an integer number (77822748).

Almost surely, 2^538994401 is an apocalyptic number.

It is an amenable number.

538994401 is a deficient number, since it is larger than the sum of its proper divisors (83587583).

538994401 is a wasteful number, since it uses less digits than its factorization.

538994401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882351.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 538994401 is about 23216.2529491733. The cubic root of 538994401 is about 813.8194865011.

The spelling of 538994401 in words is "five hundred thirty-eight million, nine hundred ninety-four thousand, four hundred one".