134438390 has 32 divisors (see below), whose sum is σ = 250573824. Its totient is φ = 51891840.

The previous prime is 134438387. The next prime is 134438401. The reversal of 134438390 is 93834431.

134438390 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 134438390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45560 + ... + 48420.

It is an arithmetic number, because the mean of its divisors is an integer number (7830432).

Almost surely, 2^134438390 is an apocalyptic number.

134438390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

134438390 is a deficient number, since it is larger than the sum of its proper divisors (116135434).

134438390 is a wasteful number, since it uses less digits than its factorization.

134438390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 134438390 is about 11594.7570047845. The cubic root of 134438390 is about 512.2804326161.

The spelling of 134438390 in words is "one hundred thirty-four million, four hundred thirty-eight thousand, three hundred ninety".