2978093 has 4 divisors (see below), whose sum is σ = 3058620. Its totient is φ = 2897568.

The previous prime is 2978089. The next prime is 2978113. The reversal of 2978093 is 3908792.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2815684 + 162409 = 1678^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 2978093 - 2² = 2978089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978033) 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, 40208 + ... + 40281.

It is an arithmetic number, because the mean of its divisors is an integer number (764655).

2^2978093 is an apocalyptic number.

It is an amenable number.

2978093 is a deficient number, since it is larger than the sum of its proper divisors (80527).

2978093 is an equidigital number, since it uses as much as digits as its factorization.

2978093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80526.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 2978093 is about 1725.7152140489. The cubic root of 2978093 is about 143.8730394587.

The spelling of 2978093 in words is "two million, nine hundred seventy-eight thousand, ninety-three".