405746376 has 64 divisors (see below), whose sum is σ = 1181174400. Its totient is φ = 113737728.

The previous prime is 405746371. The next prime is 405746377. The reversal of 405746376 is 673647504.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (405746371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13881 + ... + 31688.

It is an arithmetic number, because the mean of its divisors is an integer number (18455850).

Almost surely, 2^405746376 is an apocalyptic number.

It is an amenable number.

405746376 is an abundant number, since it is smaller than the sum of its proper divisors (775428024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405746376 is a wasteful number, since it uses less digits than its factorization.

405746376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45638 (or 45634 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 42.

The square root of 405746376 is about 20143.1471225328. The cubic root of 405746376 is about 740.3178425219.

The spelling of 405746376 in words is "four hundred five million, seven hundred forty-six thousand, three hundred seventy-six".