1455439799 has 4 divisors (see below), whose sum is σ = 1587752520. Its totient is φ = 1323127080.

The previous prime is 1455439759. The next prime is 1455439813. The reversal of 1455439799 is 9979345541.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1455439799 - 2²⁴ = 1438662583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1455439709) 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, 66156344 + ... + 66156365.

It is an arithmetic number, because the mean of its divisors is an integer number (396938130).

Almost surely, 2^1455439799 is an apocalyptic number.

1455439799 is a deficient number, since it is larger than the sum of its proper divisors (132312721).

1455439799 is a wasteful number, since it uses less digits than its factorization.

1455439799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132312720.

The product of its digits is 6123600, while the sum is 56.

The square root of 1455439799 is about 38150.2267227863. The cubic root of 1455439799 is about 1133.2648418144.

The spelling of 1455439799 in words is "one billion, four hundred fifty-five million, four hundred thirty-nine thousand, seven hundred ninety-nine".