1055399783 has 8 divisors (see below), whose sum is σ = 1136784000. Its totient is φ = 976599288.

The previous prime is 1055399767. The next prime is 1055399887. The reversal of 1055399783 is 3879935501.

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 1055399783 - 2⁴ = 1055399767 is a prime.

It is a super-2 number, since 2×1055399783² = 2227737403912894178, 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 (1055399483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 645083 + ... + 646716.

It is an arithmetic number, because the mean of its divisors is an integer number (142098000).

Almost surely, 2^1055399783 is an apocalyptic number.

1055399783 is a deficient number, since it is larger than the sum of its proper divisors (81384217).

1055399783 is a wasteful number, since it uses less digits than its factorization.

1055399783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291861.

The product of its (nonzero) digits is 1020600, while the sum is 50.

The square root of 1055399783 is about 32486.9171051979. The cubic root of 1055399783 is about 1018.1357023343.

The spelling of 1055399783 in words is "one billion, fifty-five million, three hundred ninety-nine thousand, seven hundred eighty-three".