538423901 has 4 divisors (see below), whose sum is σ = 538611900. Its totient is φ = 538235904.

The previous prime is 538423891. The next prime is 538423927. The reversal of 538423901 is 109324835.

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

It can be written as a sum of positive squares in 2 ways, for example, as 341695225 + 196728676 = 18485^2 + 14026^2 .

It is a cyclic number.

It is not a de Polignac number, because 538423901 - 2¹⁰ = 538422877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538423961) 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, 89636 + ... + 95453.

It is an arithmetic number, because the mean of its divisors is an integer number (134652975).

Almost surely, 2^538423901 is an apocalyptic number.

It is an amenable number.

538423901 is a deficient number, since it is larger than the sum of its proper divisors (187999).

538423901 is a wasteful number, since it uses less digits than its factorization.

538423901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187998.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 538423901 is about 23203.9630451352. The cubic root of 538423901 is about 813.5322553659.

The spelling of 538423901 in words is "five hundred thirty-eight million, four hundred twenty-three thousand, nine hundred one".