116491639 has 16 divisors (see below), whose sum is σ = 130277376. Its totient is φ = 103269600.

The previous prime is 116491631. The next prime is 116491643. The reversal of 116491639 is 936194611.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 116491639 - 2³ = 116491631 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 (116491631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84534 + ... + 85900.

It is an arithmetic number, because the mean of its divisors is an integer number (8142336).

Almost surely, 2^116491639 is an apocalyptic number.

116491639 is a deficient number, since it is larger than the sum of its proper divisors (13785737).

116491639 is a wasteful number, since it uses less digits than its factorization.

116491639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566.

The product of its digits is 34992, while the sum is 40.

The square root of 116491639 is about 10793.1292496662. The cubic root of 116491639 is about 488.3879258340.

The spelling of 116491639 in words is "one hundred sixteen million, four hundred ninety-one thousand, six hundred thirty-nine".