140801897 has 4 divisors (see below), whose sum is σ = 140830800. Its totient is φ = 140772996.

The previous prime is 140801893. The next prime is 140801917. The reversal of 140801897 is 798108041.

140801897 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 798108041 = 6007 ⋅132863.

It is a cyclic number.

It is not a de Polignac number, because 140801897 - 2² = 140801893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140801897.

It is not an unprimeable number, because it can be changed into a prime (140801893) 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, 5147 + ... + 17552.

It is an arithmetic number, because the mean of its divisors is an integer number (35207700).

Almost surely, 2^140801897 is an apocalyptic number.

It is an amenable number.

140801897 is a deficient number, since it is larger than the sum of its proper divisors (28903).

140801897 is an equidigital number, since it uses as much as digits as its factorization.

140801897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28902.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 140801897 is about 11865.9975139050. The cubic root of 140801897 is about 520.2389151145.

The spelling of 140801897 in words is "one hundred forty million, eight hundred one thousand, eight hundred ninety-seven".