140699401 has 2 divisors, whose sum is σ = 140699402. Its totient is φ = 140699400.

The previous prime is 140699323. The next prime is 140699417. The reversal of 140699401 is 104996041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110229001 + 30470400 = 10499^2 + 5520^2 .

It is a cyclic number.

It is not a de Polignac number, because 140699401 - 2²⁵ = 107144969 is a prime.

It is not a weakly prime, because it can be changed into another prime (140699491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70349700 + 70349701.

It is an arithmetic number, because the mean of its divisors is an integer number (70349701).

Almost surely, 2^140699401 is an apocalyptic number.

It is an amenable number.

140699401 is a deficient number, since it is larger than the sum of its proper divisors (1).

140699401 is an equidigital number, since it uses as much as digits as its factorization.

140699401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 140699401 is about 11861.6778324148. The cubic root of 140699401 is about 520.1126494112.

The spelling of 140699401 in words is "one hundred forty million, six hundred ninety-nine thousand, four hundred one".