5409172440 has 128 divisors (see below), whose sum is σ = 20606400000. Its totient is φ = 1236380544.

The previous prime is 5409172397. The next prime is 5409172471. The reversal of 5409172440 is 442719045.

It is a happy number.

5409172440 is a `hidden beast` number, since 5 + 40 + 9 + 172 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5409172395 and 5409172404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 350190 + ... + 365309.

It is an arithmetic number, because the mean of its divisors is an integer number (160987500).

Almost surely, 2^5409172440 is an apocalyptic number.

It is an amenable number.

5409172440 is an abundant number, since it is smaller than the sum of its proper divisors (15197227560).

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

5409172440 is a wasteful number, since it uses less digits than its factorization.

5409172440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715526 (or 715516 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 5409172440 is about 73547.0763524968. The cubic root of 5409172440 is about 1755.4034283306.

The spelling of 5409172440 in words is "five billion, four hundred nine million, one hundred seventy-two thousand, four hundred forty".