492377989 has 4 divisors (see below), whose sum is σ = 518292640. Its totient is φ = 466463340.

The previous prime is 492377983. The next prime is 492378011. The reversal of 492377989 is 989773294.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 989773294 = 2 ⋅494886647.

It is a cyclic number.

It is not a de Polignac number, because 492377989 - 2⁷ = 492377861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492377983) 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, 12957297 + ... + 12957334.

It is an arithmetic number, because the mean of its divisors is an integer number (129573160).

Almost surely, 2^492377989 is an apocalyptic number.

It is an amenable number.

492377989 is a deficient number, since it is larger than the sum of its proper divisors (25914651).

492377989 is a wasteful number, since it uses less digits than its factorization.

492377989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25914650.

The product of its digits is 6858432, while the sum is 58.

The square root of 492377989 is about 22189.5919070180. The cubic root of 492377989 is about 789.6467945184.

The spelling of 492377989 in words is "four hundred ninety-two million, three hundred seventy-seven thousand, nine hundred eighty-nine".