140397479 has 8 divisors (see below), whose sum is σ = 148112640. Its totient is φ = 132714936.

The previous prime is 140397461. The next prime is 140397487. The reversal of 140397479 is 974793041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140397479 - 2⁸ = 140397223 is a prime.

It is a super-2 number, since 2×140397479² = 39422904219110882, 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 (140397379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962 + ... + 16784.

It is an arithmetic number, because the mean of its divisors is an integer number (18514080).

Almost surely, 2^140397479 is an apocalyptic number.

140397479 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

140397479 is a deficient number, since it is larger than the sum of its proper divisors (7715161).

140397479 is a wasteful number, since it uses less digits than its factorization.

140397479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16309.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 140397479 is about 11848.9442145703. The cubic root of 140397479 is about 519.7403523757.

The spelling of 140397479 in words is "one hundred forty million, three hundred ninety-seven thousand, four hundred seventy-nine".