539422691 has 4 divisors (see below), whose sum is σ = 552579384. Its totient is φ = 526266000.

The previous prime is 539422687. The next prime is 539422753. The reversal of 539422691 is 196224935.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196224935 = 5 ⋅39244987.

It is a cyclic number.

It is not a de Polignac number, because 539422691 - 2² = 539422687 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 13156651 = 539422691 / (5 + 3 + 9 + 4 + 2 + 2 + 6 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (539422651) 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, 6578285 + ... + 6578366.

It is an arithmetic number, because the mean of its divisors is an integer number (138144846).

Almost surely, 2^539422691 is an apocalyptic number.

539422691 is a deficient number, since it is larger than the sum of its proper divisors (13156693).

539422691 is a wasteful number, since it uses less digits than its factorization.

539422691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13156692.

The product of its digits is 116640, while the sum is 41.

The square root of 539422691 is about 23225.4750435809. The cubic root of 539422691 is about 814.0349856277.

The spelling of 539422691 in words is "five hundred thirty-nine million, four hundred twenty-two thousand, six hundred ninety-one".