1054665439 has 4 divisors (see below), whose sum is σ = 1058392456. Its totient is φ = 1050938424.

The previous prime is 1054665379. The next prime is 1054665449. The reversal of 1054665439 is 9345664501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9345664501 = 19 ⋅491877079.

It is a cyclic number.

It is not a de Polignac number, because 1054665439 - 2¹⁷ = 1054534367 is a prime.

It is a super-2 number, since 2×1054665439² = 2224638376442125442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1054665395 and 1054665404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1054665449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1863084 + ... + 1863649.

It is an arithmetic number, because the mean of its divisors is an integer number (264598114).

Almost surely, 2^1054665439 is an apocalyptic number.

1054665439 is a deficient number, since it is larger than the sum of its proper divisors (3727017).

1054665439 is an equidigital number, since it uses as much as digits as its factorization.

1054665439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3727016.

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 1054665439 is about 32475.6129888259. The cubic root of 1054665439 is about 1017.8995089568.

The spelling of 1054665439 in words is "one billion, fifty-four million, six hundred sixty-five thousand, four hundred thirty-nine".