5409978 has 32 divisors (see below), whose sum is σ = 13094784. Its totient is φ = 1454592.

The previous prime is 5409977. The next prime is 5410007. The reversal of 5409978 is 8799045.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5409977) 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 in 15 ways as a sum of consecutive naturals, for example, 3075 + ... + 4502.

It is an arithmetic number, because the mean of its divisors is an integer number (409212).

Almost surely, 2^5409978 is an apocalyptic number.

5409978 is an abundant number, since it is smaller than the sum of its proper divisors (7684806).

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

5409978 is a wasteful number, since it uses less digits than its factorization.

5409978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7606.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 5409978 is about 2325.9359406484. The cubic root of 5409978 is about 175.5490565048.

The spelling of 5409978 in words is "five million, four hundred nine thousand, nine hundred seventy-eight".