387722 has 4 divisors (see below), whose sum is σ = 581586. Its totient is φ = 193860.

The previous prime is 387721. The next prime is 387727. The reversal of 387722 is 227783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 227783 = 17 ⋅13399.

It can be written as a sum of positive squares in only one way, i.e., 271441 + 116281 = 521^2 + 341^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 387722.

It is not an unprimeable number, because it can be changed into a prime (387721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96929 + ... + 96932.

2³⁸⁷⁷²² is an apocalyptic number.

387722 is a deficient number, since it is larger than the sum of its proper divisors (193864).

387722 is a wasteful number, since it uses less digits than its factorization.

387722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193863.

The product of its digits is 4704, while the sum is 29.

The square root of 387722 is about 622.6732690585. The cubic root of 387722 is about 72.9189066341.

The spelling of 387722 in words is "three hundred eighty-seven thousand, seven hundred twenty-two".