1039664427 has 8 divisors (see below), whose sum is σ = 1467761616. Its totient is φ = 652338432.

The previous prime is 1039664341. The next prime is 1039664473. The reversal of 1039664427 is 7244669301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1039664427 - 2¹⁸ = 1039402283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1039664497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10192738 + ... + 10192839.

It is an arithmetic number, because the mean of its divisors is an integer number (183470202).

Almost surely, 2^1039664427 is an apocalyptic number.

1039664427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1039664427 is a deficient number, since it is larger than the sum of its proper divisors (428097189).

1039664427 is a wasteful number, since it uses less digits than its factorization.

1039664427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20385597.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 1039664427 is about 32243.8277349325. The cubic root of 1039664427 is about 1013.0504212834.

The spelling of 1039664427 in words is "one billion, thirty-nine million, six hundred sixty-four thousand, four hundred twenty-seven".