3999137454 has 128 divisors (see below), whose sum is σ = 9952911360. Its totient is φ = 1181952000.

The previous prime is 3999137453. The next prime is 3999137479. The reversal of 3999137454 is 4547319993.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 3999137454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999137453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3285454 + ... + 3286670.

It is an arithmetic number, because the mean of its divisors is an integer number (77757120).

Almost surely, 2^3999137454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3999137454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4976455680).

3999137454 is an abundant number, since it is smaller than the sum of its proper divisors (5953773906).

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

3999137454 is a wasteful number, since it uses less digits than its factorization.

3999137454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423 (or 1417 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The square root of 3999137454 is about 63238.7338108536. The cubic root of 3999137454 is about 1587.2869432302.

The spelling of 3999137454 in words is "three billion, nine hundred ninety-nine million, one hundred thirty-seven thousand, four hundred fifty-four".