129070990 has 32 divisors (see below), whose sum is σ = 247680000. Its totient is φ = 48286368.

The previous prime is 129070979. The next prime is 129070999. The reversal of 129070990 is 99070921.

It is a super-3 number, since 3×129070990³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129070999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10711 + ... + 19309.

It is an arithmetic number, because the mean of its divisors is an integer number (7740000).

Almost surely, 2^129070990 is an apocalyptic number.

129070990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129070990 is a deficient number, since it is larger than the sum of its proper divisors (118609010).

129070990 is a wasteful number, since it uses less digits than its factorization.

129070990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8704.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 129070990 is about 11360.9414222590. The cubic root of 129070990 is about 505.3701041454.

The spelling of 129070990 in words is "one hundred twenty-nine million, seventy thousand, nine hundred ninety".