405945984974 has 8 divisors (see below), whose sum is σ = 608936056560. Its totient is φ = 202967299456.

The previous prime is 405945984953. The next prime is 405945984991. The reversal of 405945984974 is 479489549504.

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

It is a super-2 number, since 2×405945984974² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2756819 + ... + 2900334.

It is an arithmetic number, because the mean of its divisors is an integer number (76117007070).

Almost surely, 2^405945984974 is an apocalyptic number.

405945984974 is a deficient number, since it is larger than the sum of its proper divisors (202990071586).

405945984974 is a wasteful number, since it uses less digits than its factorization.

405945984974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5693034.

The product of its (nonzero) digits is 261273600, while the sum is 68.

The spelling of 405945984974 in words is "four hundred five billion, nine hundred forty-five million, nine hundred eighty-four thousand, nine hundred seventy-four".