380421687 has 4 divisors (see below), whose sum is σ = 507228920. Its totient is φ = 253614456.

The previous prime is 380421661. The next prime is 380421707. The reversal of 380421687 is 786124083.

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

It is not a de Polignac number, because 380421687 - 2¹² = 380417591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380421607) 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, 63403612 + ... + 63403617.

It is an arithmetic number, because the mean of its divisors is an integer number (126807230).

Almost surely, 2^380421687 is an apocalyptic number.

380421687 is a deficient number, since it is larger than the sum of its proper divisors (126807233).

380421687 is a wasteful number, since it uses less digits than its factorization.

380421687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126807232.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 380421687 is about 19504.4017339676. The cubic root of 380421687 is about 724.5834702917.

The spelling of 380421687 in words is "three hundred eighty million, four hundred twenty-one thousand, six hundred eighty-seven".