5406121439 has 4 divisors (see below), whose sum is σ = 5406403224. Its totient is φ = 5405839656.

The previous prime is 5406121429. The next prime is 5406121453. The reversal of 5406121439 is 9341216045.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5406121439 - 2²⁰ = 5405072863 is a prime.

It is a super-2 number, since 2×5406121439² = 58452298026430861442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5406121399 and 5406121408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5406121429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109832 + ... + 151245.

It is an arithmetic number, because the mean of its divisors is an integer number (1351600806).

Almost surely, 2^5406121439 is an apocalyptic number.

5406121439 is a deficient number, since it is larger than the sum of its proper divisors (281785).

5406121439 is a wasteful number, since it uses less digits than its factorization.

5406121439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281784.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 5406121439 is about 73526.3316030386. The cubic root of 5406121439 is about 1755.0733257784.

The spelling of 5406121439 in words is "five billion, four hundred six million, one hundred twenty-one thousand, four hundred thirty-nine".