140890471 has 4 divisors (see below), whose sum is σ = 142473600. Its totient is φ = 139307344.

The previous prime is 140890411. The next prime is 140890493. The reversal of 140890471 is 174098041.

140890471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 140890471 - 2¹³ = 140882279 is a prime.

It is a super-3 number, since 3×140890471³ (a number of 25 digits) contains 333 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 (140890411) 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, 791431 + ... + 791608.

It is an arithmetic number, because the mean of its divisors is an integer number (35618400).

Almost surely, 2^140890471 is an apocalyptic number.

140890471 is a deficient number, since it is larger than the sum of its proper divisors (1583129).

140890471 is an equidigital number, since it uses as much as digits as its factorization.

140890471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583128.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 140890471 is about 11869.7291881492. The cubic root of 140890471 is about 520.3479808388.

The spelling of 140890471 in words is "one hundred forty million, eight hundred ninety thousand, four hundred seventy-one".