140366399 has 8 divisors (see below), whose sum is σ = 148837680. Its totient is φ = 131918976.

The previous prime is 140366381. The next prime is 140366431. The reversal of 140366399 is 993663041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140366399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140360399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6977 + ... + 18149.

It is an arithmetic number, because the mean of its divisors is an integer number (18604710).

Almost surely, 2^140366399 is an apocalyptic number.

140366399 is a deficient number, since it is larger than the sum of its proper divisors (8471281).

140366399 is a wasteful number, since it uses less digits than its factorization.

140366399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11929.

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 140366399 is about 11847.6326327246. The cubic root of 140366399 is about 519.7019976455.

The spelling of 140366399 in words is "one hundred forty million, three hundred sixty-six thousand, three hundred ninety-nine".