491077079 has 4 divisors (see below), whose sum is σ = 519963984. Its totient is φ = 462190176.

The previous prime is 491077057. The next prime is 491077099. The reversal of 491077079 is 970770194.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970770194 = 2 ⋅485385097.

It is a cyclic number.

It is not a de Polignac number, because 491077079 - 2⁸ = 491076823 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 (491077099) 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, 14443427 + ... + 14443460.

It is an arithmetic number, because the mean of its divisors is an integer number (129990996).

Almost surely, 2^491077079 is an apocalyptic number.

491077079 is a deficient number, since it is larger than the sum of its proper divisors (28886905).

491077079 is a wasteful number, since it uses less digits than its factorization.

491077079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28886904.

The product of its (nonzero) digits is 111132, while the sum is 44.

The square root of 491077079 is about 22160.2590011940. The cubic root of 491077079 is about 788.9507402195.

The spelling of 491077079 in words is "four hundred ninety-one million, seventy-seven thousand, seventy-nine".