5406391 has 4 divisors (see below), whose sum is σ = 5724432. Its totient is φ = 5088352.

The previous prime is 5406377. The next prime is 5406397. The reversal of 5406391 is 1936045.

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 5406391 - 2¹³ = 5398199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5406397) 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, 158995 + ... + 159028.

It is an arithmetic number, because the mean of its divisors is an integer number (1431108).

Almost surely, 2^5406391 is an apocalyptic number.

5406391 is a deficient number, since it is larger than the sum of its proper divisors (318041).

5406391 is a wasteful number, since it uses less digits than its factorization.

5406391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318040.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 5406391 is about 2325.1647253474. The cubic root of 5406391 is about 175.5102495888.

The spelling of 5406391 in words is "five million, four hundred six thousand, three hundred ninety-one".