1121454399 has 16 divisors (see below), whose sum is σ = 1618735104. Its totient is φ = 686508000.

The previous prime is 1121454391. The next prime is 1121454403. The reversal of 1121454399 is 9934541211.

It is not a de Polignac number, because 1121454399 - 2³ = 1121454391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121454391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67827 + ... + 82724.

It is an arithmetic number, because the mean of its divisors is an integer number (101170944).

Almost surely, 2^1121454399 is an apocalyptic number.

1121454399 is a deficient number, since it is larger than the sum of its proper divisors (497280705).

1121454399 is a wasteful number, since it uses less digits than its factorization.

1121454399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150758.

The product of its digits is 38880, while the sum is 39.

The square root of 1121454399 is about 33488.1232528788. The cubic root of 1121454399 is about 1038.9481472553.

The spelling of 1121454399 in words is "one billion, one hundred twenty-one million, four hundred fifty-four thousand, three hundred ninety-nine".