3780427 has 4 divisors (see below), whose sum is σ = 4320496. Its totient is φ = 3240360.

The previous prime is 3780407. The next prime is 3780433. The reversal of 3780427 is 7240873.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3780427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3780407) 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, 270024 + ... + 270037.

It is an arithmetic number, because the mean of its divisors is an integer number (1080124).

Almost surely, 2^3780427 is an apocalyptic number.

3780427 is a deficient number, since it is larger than the sum of its proper divisors (540069).

3780427 is an equidigital number, since it uses as much as digits as its factorization.

3780427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540068.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 3780427 is about 1944.3320189721. The cubic root of 3780427 is about 155.7806884299.

The spelling of 3780427 in words is "three million, seven hundred eighty thousand, four hundred twenty-seven".