405450478 has 8 divisors (see below), whose sum is σ = 618483960. Its totient is φ = 199289160.

The previous prime is 405450473. The next prime is 405450491. The reversal of 405450478 is 874054504.

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

It is a super-2 number, since 2×405450478² = 328780180220856968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405450473) 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, 1717893 + ... + 1718128.

It is an arithmetic number, because the mean of its divisors is an integer number (77310495).

Almost surely, 2^405450478 is an apocalyptic number.

405450478 is a deficient number, since it is larger than the sum of its proper divisors (213033482).

405450478 is a wasteful number, since it uses less digits than its factorization.

405450478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3436082.

The product of its (nonzero) digits is 89600, while the sum is 37.

The square root of 405450478 is about 20135.8009028695. The cubic root of 405450478 is about 740.1378352937.

The spelling of 405450478 in words is "four hundred five million, four hundred fifty thousand, four hundred seventy-eight".