129895454 has 16 divisors (see below), whose sum is σ = 211368528. Its totient is φ = 59512512.

The previous prime is 129895433. The next prime is 129895483. The reversal of 129895454 is 454598921.

It is a happy number.

It is a super-2 number, since 2×129895454² = 33745657939732232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 129895399 and 129895408.

It is a congruent number.

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, 14672 + ... + 21795.

It is an arithmetic number, because the mean of its divisors is an integer number (13210533).

Almost surely, 2^129895454 is an apocalyptic number.

129895454 is a deficient number, since it is larger than the sum of its proper divisors (81473074).

129895454 is a wasteful number, since it uses less digits than its factorization.

129895454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36619.

The product of its digits is 518400, while the sum is 47.

The square root of 129895454 is about 11397.1686834933. The cubic root of 129895454 is about 506.4438683590.

The spelling of 129895454 in words is "one hundred twenty-nine million, eight hundred ninety-five thousand, four hundred fifty-four".