399274 has 4 divisors (see below), whose sum is σ = 598914. Its totient is φ = 199636.

The previous prime is 399271. The next prime is 399277. The reversal of 399274 is 472993.

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

It is an interprime number because it is at equal distance from previous prime (399271) and next prime (399277).

It can be written as a sum of positive squares in only one way, i.e., 390625 + 8649 = 625^2 + 93^2 .

It is not an unprimeable number, because it can be changed into a prime (399271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99817 + ... + 99820.

2³⁹⁹²⁷⁴ is an apocalyptic number.

399274 is a deficient number, since it is larger than the sum of its proper divisors (199640).

399274 is a wasteful number, since it uses less digits than its factorization.

399274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199639.

The product of its digits is 13608, while the sum is 34.

The square root of 399274 is about 631.8813179704. The cubic root of 399274 is about 73.6360261955.

The spelling of 399274 in words is "three hundred ninety-nine thousand, two hundred seventy-four".