136999390 has 16 divisors (see below), whose sum is σ = 269017200. Its totient is φ = 49817920.

The previous prime is 136999363. The next prime is 136999397. The reversal of 136999390 is 93999631.

It is a happy number.

136999390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136999397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622615 + ... + 622834.

It is an arithmetic number, because the mean of its divisors is an integer number (16813575).

Almost surely, 2^136999390 is an apocalyptic number.

136999390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136999390 is a deficient number, since it is larger than the sum of its proper divisors (132017810).

136999390 is a wasteful number, since it uses less digits than its factorization.

136999390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245467.

The product of its (nonzero) digits is 354294, while the sum is 49.

The square root of 136999390 is about 11704.6738527821. The cubic root of 136999390 is about 515.5129084288.

The spelling of 136999390 in words is "one hundred thirty-six million, nine hundred ninety-nine thousand, three hundred ninety".