7393861 has 4 divisors (see below), whose sum is σ = 7828812. Its totient is φ = 6958912.

The previous prime is 7393849. The next prime is 7393873. The reversal of 7393861 is 1683937.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1683937 = 433 ⋅3889.

It is an interprime number because it is at equal distance from previous prime (7393849) and next prime (7393873).

It can be written as a sum of positive squares in 2 ways, for example, as 5688225 + 1705636 = 2385^2 + 1306^2 .

It is a cyclic number.

It is not a de Polignac number, because 7393861 - 2⁷ = 7393733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7393861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7393891) 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, 217450 + ... + 217483.

It is an arithmetic number, because the mean of its divisors is an integer number (1957203).

Almost surely, 2^7393861 is an apocalyptic number.

It is an amenable number.

7393861 is a deficient number, since it is larger than the sum of its proper divisors (434951).

7393861 is a wasteful number, since it uses less digits than its factorization.

7393861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434950.

The product of its digits is 27216, while the sum is 37.

The square root of 7393861 is about 2719.1654969862. The cubic root of 7393861 is about 194.8156135633.

The spelling of 7393861 in words is "seven million, three hundred ninety-three thousand, eight hundred sixty-one".