140398969 has 16 divisors (see below), whose sum is σ = 153538560. Its totient is φ = 127979280.

The previous prime is 140398949. The next prime is 140398987. The reversal of 140398969 is 969893041.

140398969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 140398969 - 2⁹ = 140398457 is a prime.

It is a super-2 number, since 2×140398969² = 39423740992525922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140398919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46302 + ... + 49240.

It is an arithmetic number, because the mean of its divisors is an integer number (9596160).

Almost surely, 2^140398969 is an apocalyptic number.

It is an amenable number.

140398969 is a deficient number, since it is larger than the sum of its proper divisors (13139591).

140398969 is a wasteful number, since it uses less digits than its factorization.

140398969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3060.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 140398969 is about 11849.0070892037. The cubic root of 140398969 is about 519.7421909899.

The spelling of 140398969 in words is "one hundred forty million, three hundred ninety-eight thousand, nine hundred sixty-nine".