849740457 has 12 divisors (see below), whose sum is σ = 1161302000. Its totient is φ = 552673440.

The previous prime is 849740447. The next prime is 849740459. The reversal of 849740457 is 754047948.

It is not a de Polignac number, because 849740457 - 2⁸ = 849740201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (849740459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79207 + ... + 89292.

Almost surely, 2^849740457 is an apocalyptic number.

It is an amenable number.

849740457 is a deficient number, since it is larger than the sum of its proper divisors (311561543).

849740457 is a wasteful number, since it uses less digits than its factorization.

849740457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168584 (or 168543 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The square root of 849740457 is about 29150.3080086643. The cubic root of 849740457 is about 947.1718129239.

The spelling of 849740457 in words is "eight hundred forty-nine million, seven hundred forty thousand, four hundred fifty-seven".