1055395993 has 8 divisors (see below), whose sum is σ = 1077144480. Its totient is φ = 1033824000.

The previous prime is 1055395981. The next prime is 1055396011. The reversal of 1055395993 is 3995935501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1055395993 is a prime.

It is a super-2 number, since 2×1055395993² = 2227721404080912098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055395933) 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, 32008 + ... + 55993.

It is an arithmetic number, because the mean of its divisors is an integer number (134643060).

Almost surely, 2^1055395993 is an apocalyptic number.

It is an amenable number.

1055395993 is a deficient number, since it is larger than the sum of its proper divisors (21748487).

1055395993 is an equidigital number, since it uses as much as digits as its factorization.

1055395993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88247.

The product of its (nonzero) digits is 820125, while the sum is 49.

The square root of 1055395993 is about 32486.8587739720. The cubic root of 1055395993 is about 1018.1344836053.

The spelling of 1055395993 in words is "one billion, fifty-five million, three hundred ninety-five thousand, nine hundred ninety-three".