539740649 has 8 divisors (see below), whose sum is σ = 617207808. Its totient is φ = 462363840.

The previous prime is 539740637. The next prime is 539740693. The reversal of 539740649 is 946047935.

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 a de Polignac number, because none of the positive numbers 2^k-539740649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (539740549) 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, 9257 + ... + 34134.

It is an arithmetic number, because the mean of its divisors is an integer number (77150976).

Almost surely, 2^539740649 is an apocalyptic number.

It is an amenable number.

539740649 is a deficient number, since it is larger than the sum of its proper divisors (77467159).

539740649 is a wasteful number, since it uses less digits than its factorization.

539740649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45175.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 539740649 is about 23232.3190620308. The cubic root of 539740649 is about 814.1948961531.

The spelling of 539740649 in words is "five hundred thirty-nine million, seven hundred forty thousand, six hundred forty-nine".