1057829639 has 8 divisors (see below), whose sum is σ = 1119370752. Its totient is φ = 997584280.

The previous prime is 1057829621. The next prime is 1057829653. The reversal of 1057829639 is 9369287501.

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

It is a cyclic number.

It is not a de Polignac number, because 1057829639 - 2²⁴ = 1041052423 is a prime.

It is a super-2 number, since 2×1057829639² = 2238007090293740642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057829659) 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, 322259 + ... + 325524.

It is an arithmetic number, because the mean of its divisors is an integer number (139921344).

Almost surely, 2^1057829639 is an apocalyptic number.

1057829639 is a deficient number, since it is larger than the sum of its proper divisors (61541113).

1057829639 is an equidigital number, since it uses as much as digits as its factorization.

1057829639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647877.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 1057829639 is about 32524.2930591888. The cubic root of 1057829639 is about 1018.9164576561.

The spelling of 1057829639 in words is "one billion, fifty-seven million, eight hundred twenty-nine thousand, six hundred thirty-nine".