3489978 has 8 divisors (see below), whose sum is σ = 6979968. Its totient is φ = 1163324.

The previous prime is 3489973. The next prime is 3490021. The reversal of 3489978 is 8799843.

It is a sphenic number, since it is the product of 3 distinct primes.

3489978 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3489973) 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, 290826 + ... + 290837.

It is an arithmetic number, because the mean of its divisors is an integer number (872496).

Almost surely, 2^3489978 is an apocalyptic number.

3489978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3489978 is a wasteful number, since it uses less digits than its factorization.

3489978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581668.

The product of its digits is 435456, while the sum is 48.

The square root of 3489978 is about 1868.1482810527. The cubic root of 3489978 is about 151.6843924592.

The spelling of 3489978 in words is "three million, four hundred eighty-nine thousand, nine hundred seventy-eight".