1139854464 has 384 divisors, whose sum is σ = 4018636800. Its totient is φ = 317011968.

The previous prime is 1139854421. The next prime is 1139854487. The reversal of 1139854464 is 4644589311.

1139854464 is a `hidden beast` number, since 1 + 13 + 98 + 544 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

Its product of digits (414720) is a multiple of the sum of its prime divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8975169 + ... + 8975295.

It is an arithmetic number, because the mean of its divisors is an integer number (10465200).

Almost surely, 2^1139854464 is an apocalyptic number.

1139854464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1139854464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2009318400).

1139854464 is an abundant number, since it is smaller than the sum of its proper divisors (2878782336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1139854464 is a wasteful number, since it uses less digits than its factorization.

1139854464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 192 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 1139854464 is about 33761.7307613221. The cubic root of 1139854464 is about 1044.5994707496.

The spelling of 1139854464 in words is "one billion, one hundred thirty-nine million, eight hundred fifty-four thousand, four hundred sixty-four".