424849861 has 4 divisors (see below), whose sum is σ = 447210400. Its totient is φ = 402489324.

The previous prime is 424849849. The next prime is 424849889. The reversal of 424849861 is 168948424.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424849861 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 (424849661) 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, 11180241 + ... + 11180278.

It is an arithmetic number, because the mean of its divisors is an integer number (111802600).

Almost surely, 2^424849861 is an apocalyptic number.

It is an amenable number.

424849861 is a deficient number, since it is larger than the sum of its proper divisors (22360539).

424849861 is a wasteful number, since it uses less digits than its factorization.

424849861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22360538.

The product of its digits is 442368, while the sum is 46.

The square root of 424849861 is about 20611.8864008125. The cubic root of 424849861 is about 751.7587530856.

The spelling of 424849861 in words is "four hundred twenty-four million, eight hundred forty-nine thousand, eight hundred sixty-one".