5398906 has 4 divisors (see below), whose sum is σ = 8098362. Its totient is φ = 2699452.

The previous prime is 5398891. The next prime is 5398909. The reversal of 5398906 is 6098935.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6098935 = 5 ⋅1219787.

It can be written as a sum of positive squares in only one way, i.e., 2706025 + 2692881 = 1645^2 + 1641^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5398909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1349725 + ... + 1349728.

Almost surely, 2^5398906 is an apocalyptic number.

5398906 is a deficient number, since it is larger than the sum of its proper divisors (2699456).

5398906 is a wasteful number, since it uses less digits than its factorization.

5398906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699455.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 5398906 is about 2323.5546044800. The cubic root of 5398906 is about 175.4292158059.

The spelling of 5398906 in words is "five million, three hundred ninety-eight thousand, nine hundred six".