140634445 has 32 divisors (see below), whose sum is σ = 200318976. Its totient is φ = 92750400.

The previous prime is 140634401. The next prime is 140634479. The reversal of 140634445 is 544436041.

It is not a de Polignac number, because 140634445 - 2⁷ = 140634317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 246010 + ... + 246580.

It is an arithmetic number, because the mean of its divisors is an integer number (6259968).

Almost surely, 2^140634445 is an apocalyptic number.

It is an amenable number.

140634445 is a deficient number, since it is larger than the sum of its proper divisors (59684531).

140634445 is a wasteful number, since it uses less digits than its factorization.

140634445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 140634445 is about 11858.9394551115. The cubic root of 140634445 is about 520.0325978085.

The spelling of 140634445 in words is "one hundred forty million, six hundred thirty-four thousand, four hundred forty-five".