140979469 has 4 divisors (see below), whose sum is σ = 145840860. Its totient is φ = 136118080.

The previous prime is 140979467. The next prime is 140979481. The reversal of 140979469 is 964979041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84879369 + 56100100 = 9213^2 + 7490^2 .

It is a cyclic number.

It is not a de Polignac number, because 140979469 - 2¹ = 140979467 is a prime.

It is a super-2 number, since 2×140979469² = 39750421359043922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140979463) 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 3 ways as a sum of consecutive naturals, for example, 2430652 + ... + 2430709.

It is an arithmetic number, because the mean of its divisors is an integer number (36460215).

Almost surely, 2^140979469 is an apocalyptic number.

It is an amenable number.

140979469 is a deficient number, since it is larger than the sum of its proper divisors (4861391).

140979469 is an equidigital number, since it uses as much as digits as its factorization.

140979469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4861390.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 140979469 is about 11873.4775445107. The cubic root of 140979469 is about 520.4575226260.

The spelling of 140979469 in words is "one hundred forty million, nine hundred seventy-nine thousand, four hundred sixty-nine".