140451479 has 4 divisors (see below), whose sum is σ = 160515984. Its totient is φ = 120386976.

The previous prime is 140451473. The next prime is 140451481. The reversal of 140451479 is 974154041.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140451479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140451473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10032242 + ... + 10032255.

It is an arithmetic number, because the mean of its divisors is an integer number (40128996).

Almost surely, 2^140451479 is an apocalyptic number.

140451479 is a deficient number, since it is larger than the sum of its proper divisors (20064505).

140451479 is an equidigital number, since it uses as much as digits as its factorization.

140451479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20064504.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 140451479 is about 11851.2226795382. Note that the first 3 decimals coincide. The cubic root of 140451479 is about 519.8069784095.

The spelling of 140451479 in words is "one hundred forty million, four hundred fifty-one thousand, four hundred seventy-nine".