139954801 has 32 divisors (see below), whose sum is σ = 171100160. Its totient is φ = 111974400.

The previous prime is 139954781. The next prime is 139954847. The reversal of 139954801 is 108459931.

It is a 7-Lehmer number, since φ(139954801) divides (139954801-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 139954801 - 2⁵ = 139954769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139954891) 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 31 ways as a sum of consecutive naturals, for example, 1283935 + ... + 1284043.

It is an arithmetic number, because the mean of its divisors is an integer number (5346880).

Almost surely, 2^139954801 is an apocalyptic number.

It is an amenable number.

139954801 is a deficient number, since it is larger than the sum of its proper divisors (31145359).

139954801 is a wasteful number, since it uses less digits than its factorization.

139954801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 139954801 is about 11830.2494056550. The cubic root of 139954801 is about 519.1935242797.

The spelling of 139954801 in words is "one hundred thirty-nine million, nine hundred fifty-four thousand, eight hundred one".