140394458 has 16 divisors (see below), whose sum is σ = 221968320. Its totient is φ = 66414816.

The previous prime is 140394451. The next prime is 140394467. The reversal of 140394458 is 854493041.

It is a super-2 number, since 2×140394458² = 39421207674227528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (140394451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33635 + ... + 37577.

It is an arithmetic number, because the mean of its divisors is an integer number (13873020).

Almost surely, 2^140394458 is an apocalyptic number.

140394458 is a deficient number, since it is larger than the sum of its proper divisors (81573862).

140394458 is a wasteful number, since it uses less digits than its factorization.

140394458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4901.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 140394458 is about 11848.8167341722. The cubic root of 140394458 is about 519.7366245147.

The spelling of 140394458 in words is "one hundred forty million, three hundred ninety-four thousand, four hundred fifty-eight".