1046639457 has 12 divisors (see below), whose sum is σ = 1517436180. Its totient is φ = 695164128.

The previous prime is 1046639441. The next prime is 1046639497. The reversal of 1046639457 is 7549366401.

1046639457 is a `hidden beast` number, since 1 + 0 + 4 + 6 + 639 + 4 + 5 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 155975121 + 890664336 = 12489^2 + 29844^2 .

It is not a de Polignac number, because 1046639457 - 2⁴ = 1046639441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1046639417) 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, 213738 + ... + 218579.

It is an arithmetic number, because the mean of its divisors is an integer number (126453015).

Almost surely, 2^1046639457 is an apocalyptic number.

It is an amenable number.

1046639457 is a deficient number, since it is larger than the sum of its proper divisors (470796723).

1046639457 is a wasteful number, since it uses less digits than its factorization.

1046639457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432592 (or 432589 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 1046639457 is about 32351.8076311046. The cubic root of 1046639457 is about 1015.3108666253.

The spelling of 1046639457 in words is "one billion, forty-six million, six hundred thirty-nine thousand, four hundred fifty-seven".