64409842 has 16 divisors (see below), whose sum is σ = 110710080. Its totient is φ = 27530928.

The previous prime is 64409833. The next prime is 64409857. The reversal of 64409842 is 24890446.

It is a super-4 number, since 4×64409842⁴ (a number of 32 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468 + ... + 11359.

It is an arithmetic number, because the mean of its divisors is an integer number (6919380).

Almost surely, 2^64409842 is an apocalyptic number.

64409842 is a deficient number, since it is larger than the sum of its proper divisors (46300238).

64409842 is a wasteful number, since it uses less digits than its factorization.

64409842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12225.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 64409842 is about 8025.5742473670. The cubic root of 64409842 is about 400.8520213604.

The spelling of 64409842 in words is "sixty-four million, four hundred nine thousand, eight hundred forty-two".