139954958 has 32 divisors (see below), whose sum is σ = 249080832. Its totient is φ = 58140000.

The previous prime is 139954951. The next prime is 139954961. The reversal of 139954958 is 859459931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139954951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27083 + ... + 31833.

It is an arithmetic number, because the mean of its divisors is an integer number (7783776).

Almost surely, 2^139954958 is an apocalyptic number.

139954958 is a deficient number, since it is larger than the sum of its proper divisors (109125874).

139954958 is a wasteful number, since it uses less digits than its factorization.

139954958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4880.

The product of its digits is 1749600, while the sum is 53.

The square root of 139954958 is about 11830.2560411852. The cubic root of 139954958 is about 519.1937184218.

The spelling of 139954958 in words is "one hundred thirty-nine million, nine hundred fifty-four thousand, nine hundred fifty-eight".