5401439999 has 8 divisors (see below), whose sum is σ = 5534146800. Its totient is φ = 5268779200.

The previous prime is 5401439987. The next prime is 5401440043. The reversal of 5401439999 is 9999341045.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5401439999 is a prime.

It is a super-3 number, since 3×5401439999³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5401439999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5401439959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455852 + ... + 467550.

It is an arithmetic number, because the mean of its divisors is an integer number (691768350).

Almost surely, 2^5401439999 is an apocalyptic number.

5401439999 is a deficient number, since it is larger than the sum of its proper divisors (132706801).

5401439999 is a wasteful number, since it uses less digits than its factorization.

5401439999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23001.

The product of its (nonzero) digits is 1574640, while the sum is 53.

The square root of 5401439999 is about 73494.4895825531. The cubic root of 5401439999 is about 1754.5665765722.

The spelling of 5401439999 in words is "five billion, four hundred one million, four hundred thirty-nine thousand, nine hundred ninety-nine".