140392894 has 4 divisors (see below), whose sum is σ = 210589344. Its totient is φ = 70196446.

The previous prime is 140392891. The next prime is 140392909. The reversal of 140392894 is 498293041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 498293041 = 347 ⋅1436003.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140392891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35098222 + ... + 35098225.

It is an arithmetic number, because the mean of its divisors is an integer number (52647336).

Almost surely, 2^140392894 is an apocalyptic number.

140392894 is a deficient number, since it is larger than the sum of its proper divisors (70196450).

140392894 is an equidigital number, since it uses as much as digits as its factorization.

140392894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70196449.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 140392894 is about 11848.7507358371. The cubic root of 140392894 is about 519.7346945451.

The spelling of 140392894 in words is "one hundred forty million, three hundred ninety-two thousand, eight hundred ninety-four".