405239974 has 8 divisors (see below), whose sum is σ = 607948848. Its totient is φ = 202590360.

The previous prime is 405239971. The next prime is 405239981. The reversal of 405239974 is 479932504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 405239974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405239971) 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, 11964 + ... + 30880.

It is an arithmetic number, because the mean of its divisors is an integer number (75993606).

Almost surely, 2^405239974 is an apocalyptic number.

405239974 is a deficient number, since it is larger than the sum of its proper divisors (202708874).

405239974 is a wasteful number, since it uses less digits than its factorization.

405239974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29630.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 405239974 is about 20130.5731165310. The cubic root of 405239974 is about 740.0097235148.

The spelling of 405239974 in words is "four hundred five million, two hundred thirty-nine thousand, nine hundred seventy-four".