3403978 has 16 divisors (see below), whose sum is σ = 5511240. Its totient is φ = 1570816.

The previous prime is 3403973. The next prime is 3403997. The reversal of 3403978 is 8793043.

It can be written as a sum of positive squares in 4 ways, for example, as 3337929 + 66049 = 1827^2 + 257^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (3403973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858 + ... + 2746.

Almost surely, 2^3403978 is an apocalyptic number.

3403978 is a deficient number, since it is larger than the sum of its proper divisors (2107262).

3403978 is a wasteful number, since it uses less digits than its factorization.

3403978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 3403978 is about 1844.9872628287. The cubic root of 3403978 is about 150.4280808534.

The spelling of 3403978 in words is "three million, four hundred three thousand, nine hundred seventy-eight".