140978499 has 16 divisors (see below), whose sum is σ = 198124800. Its totient is φ = 88922016.

The previous prime is 140978443. The next prime is 140978507. The reversal of 140978499 is 994879041.

It is not a de Polignac number, because 140978499 - 2²⁵ = 107424067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140978099) 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, 68122 + ... + 70160.

It is an arithmetic number, because the mean of its divisors is an integer number (12382800).

Almost surely, 2^140978499 is an apocalyptic number.

140978499 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

140978499 is a deficient number, since it is larger than the sum of its proper divisors (57146301).

140978499 is a wasteful number, since it uses less digits than its factorization.

140978499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 140978499 is about 11873.4366970983. The cubic root of 140978499 is about 520.4563289653.

The spelling of 140978499 in words is "one hundred forty million, nine hundred seventy-eight thousand, four hundred ninety-nine".