2059978 has 4 divisors (see below), whose sum is σ = 3089970. Its totient is φ = 1029988.

The previous prime is 2059973. The next prime is 2059979. The reversal of 2059978 is 8799502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1671849 + 388129 = 1293^2 + 623^2 .

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 a self number, because there is not a number n which added to its sum of digits gives 2059978.

It is not an unprimeable number, because it can be changed into a prime (2059973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514993 + ... + 514996.

2^2059978 is an apocalyptic number.

2059978 is a deficient number, since it is larger than the sum of its proper divisors (1029992).

2059978 is a wasteful number, since it uses less digits than its factorization.

2059978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029991.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 2059978 is about 1435.2623453571. The cubic root of 2059978 is about 127.2391797480.

The spelling of 2059978 in words is "two million, fifty-nine thousand, nine hundred seventy-eight".