140398801 has 15 divisors (see below), whose sum is σ = 152900743. Its totient is φ = 128917120.

The previous prime is 140398799. The next prime is 140398807. The reversal of 140398801 is 108893041.

It is a happy number.

The square root of 140398801 is 11849.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 66438801 + 73960000 = 8151^2 + 8600^2 .

It is not a de Polignac number, because 140398801 - 2¹ = 140398799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140398807) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 3424341 + ... + 3424381.

Almost surely, 2^140398801 is an apocalyptic number.

140398801 is the 11849-th square number.

140398801 is the 5925-th centered octagonal number.

It is an amenable number.

140398801 is a deficient number, since it is larger than the sum of its proper divisors (12501942).

140398801 is an frugal number, since it uses more digits than its factorization.

140398801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The cubic root of 140398801 is about 519.7419836837.

The spelling of 140398801 in words is "one hundred forty million, three hundred ninety-eight thousand, eight hundred one".