394675406 has 4 divisors (see below), whose sum is σ = 592013112. Its totient is φ = 197337702.

The previous prime is 394675399. The next prime is 394675409. The reversal of 394675406 is 604576493.

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

It is a super-2 number, since 2×394675406² = 311537352202529672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394675409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98668850 + ... + 98668853.

It is an arithmetic number, because the mean of its divisors is an integer number (148003278).

Almost surely, 2^394675406 is an apocalyptic number.

394675406 is a deficient number, since it is larger than the sum of its proper divisors (197337706).

394675406 is a wasteful number, since it uses less digits than its factorization.

394675406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197337705.

The product of its (nonzero) digits is 544320, while the sum is 44.

The square root of 394675406 is about 19866.4391877357. The cubic root of 394675406 is about 733.5223562781.

The spelling of 394675406 in words is "three hundred ninety-four million, six hundred seventy-five thousand, four hundred six".