8740381 has 8 divisors (see below), whose sum is σ = 9440984. Its totient is φ = 8043840.

The previous prime is 8740373. The next prime is 8740387. The reversal of 8740381 is 1830478.

8740381 = 2090² + 2091².

It is a happy number.

8740381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 872356 + 7868025 = 934^2 + 2805^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8740381 - 2³ = 8740373 is a prime.

It is a super-2 number, since 2×8740381² = 152788520050322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8740387) 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, 4675 + ... + 6271.

It is an arithmetic number, because the mean of its divisors is an integer number (1180123).

Almost surely, 2^8740381 is an apocalyptic number.

8740381 is the 2091-st centered square number.

It is an amenable number.

8740381 is a deficient number, since it is larger than the sum of its proper divisors (700603).

8740381 is a wasteful number, since it uses less digits than its factorization.

8740381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 8740381 is about 2956.4135367029. The cubic root of 8740381 is about 205.9887275071.

Subtracting from 8740381 its reverse (1830478), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 8740381 in words is "eight million, seven hundred forty thousand, three hundred eighty-one".