129074446 has 4 divisors (see below), whose sum is σ = 193611672. Its totient is φ = 64537222.

The previous prime is 129074417. The next prime is 129074461. The reversal of 129074446 is 644470921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 644470921 = 37 ⋅17418133.

It is a super-2 number, since 2×129074446² = 33320425220413832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 32268610 + ... + 32268613.

It is an arithmetic number, because the mean of its divisors is an integer number (48402918).

Almost surely, 2^129074446 is an apocalyptic number.

129074446 is a deficient number, since it is larger than the sum of its proper divisors (64537226).

129074446 is an equidigital number, since it uses as much as digits as its factorization.

129074446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64537225.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 129074446 is about 11361.0935213121. The cubic root of 129074446 is about 505.3746146955.

The spelling of 129074446 in words is "one hundred twenty-nine million, seventy-four thousand, four hundred forty-six".