7948381 has 4 divisors (see below), whose sum is σ = 9083872. Its totient is φ = 6812892.

The previous prime is 7948373. The next prime is 7948393. The reversal of 7948381 is 1838497.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1838497 = 19 ⋅96763.

It is a cyclic number.

It is not a de Polignac number, because 7948381 - 2³ = 7948373 is a prime.

It is a super-2 number, since 2×7948381² = 126353521042322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7948351) 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, 567735 + ... + 567748.

It is an arithmetic number, because the mean of its divisors is an integer number (2270968).

Almost surely, 2^7948381 is an apocalyptic number.

It is an amenable number.

7948381 is a deficient number, since it is larger than the sum of its proper divisors (1135491).

7948381 is a wasteful number, since it uses less digits than its factorization.

7948381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135490.

The product of its digits is 48384, while the sum is 40.

The square root of 7948381 is about 2819.2873212924. The cubic root of 7948381 is about 199.5689131549.

The spelling of 7948381 in words is "seven million, nine hundred forty-eight thousand, three hundred eighty-one".