135398890 has 32 divisors (see below), whose sum is σ = 269256960. Its totient is φ = 48609600.

The previous prime is 135398843. The next prime is 135398903. The reversal of 135398890 is 98893531.

It is a self number, because there is not a number n which added to its sum of digits gives 135398890.

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, 900 + ... + 16480.

It is an arithmetic number, because the mean of its divisors is an integer number (8414280).

Almost surely, 2^135398890 is an apocalyptic number.

135398890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135398890 is a deficient number, since it is larger than the sum of its proper divisors (133858070).

135398890 is a wasteful number, since it uses less digits than its factorization.

135398890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15678.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 135398890 is about 11636.1028699475. The cubic root of 135398890 is about 513.4975407467.

The spelling of 135398890 in words is "one hundred thirty-five million, three hundred ninety-eight thousand, eight hundred ninety".