393974 has 16 divisors (see below), whose sum is σ = 684288. Its totient is φ = 166632.

The previous prime is 393961. The next prime is 393977. The reversal of 393974 is 479393.

393974 = T₃₃₂ + T₃₃₃ + ... + T₃₃₈.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 393974.

It is not an unprimeable number, because it can be changed into a prime (393977) 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, 1367 + ... + 1629.

It is an arithmetic number, because the mean of its divisors is an integer number (42768).

2³⁹³⁹⁷⁴ is an apocalyptic number.

393974 is a deficient number, since it is larger than the sum of its proper divisors (290314).

393974 is a wasteful number, since it uses less digits than its factorization.

393974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its digits is 20412, while the sum is 35.

The square root of 393974 is about 627.6734819952. The cubic root of 393974 is about 73.3087566863.

The spelling of 393974 in words is "three hundred ninety-three thousand, nine hundred seventy-four".