407891942 has 8 divisors (see below), whose sum is σ = 613013832. Its totient is φ = 203554000.

The previous prime is 407891941. The next prime is 407891951. The reversal of 407891942 is 249198704.

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

It is a junction number, because it is equal to n+sod(n) for n = 407891893 and 407891902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407891941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194684 + ... + 196767.

It is an arithmetic number, because the mean of its divisors is an integer number (76626729).

Almost surely, 2^407891942 is an apocalyptic number.

407891942 is a deficient number, since it is larger than the sum of its proper divisors (205121890).

407891942 is a wasteful number, since it uses less digits than its factorization.

407891942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391974.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 407891942 is about 20196.3348655146. The cubic root of 407891942 is about 741.6204700483.

The spelling of 407891942 in words is "four hundred seven million, eight hundred ninety-one thousand, nine hundred forty-two".