140189621 has 16 divisors (see below), whose sum is σ = 165110400. Its totient is φ = 117347520.

The previous prime is 140189597. The next prime is 140189629. The reversal of 140189621 is 126981041.

It is a cyclic number.

It is not a de Polignac number, because 140189621 - 2¹⁸ = 139927477 is a prime.

It is a super-2 number, since 2×140189621² = 39306259672247282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140189629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70955 + ... + 72903.

It is an arithmetic number, because the mean of its divisors is an integer number (10319400).

Almost surely, 2^140189621 is an apocalyptic number.

140189621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140189621 is a deficient number, since it is larger than the sum of its proper divisors (24920779).

140189621 is a wasteful number, since it uses less digits than its factorization.

140189621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 140189621 is about 11840.1698045256. The cubic root of 140189621 is about 519.4837344065.

The spelling of 140189621 in words is "one hundred forty million, one hundred eighty-nine thousand, six hundred twenty-one".