140904401 has 4 divisors (see below), whose sum is σ = 153713904. Its totient is φ = 128094900.

The previous prime is 140904397. The next prime is 140904403. The reversal of 140904401 is 104409041.

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.

It is a cyclic number.

It is not a de Polignac number, because 140904401 - 2² = 140904397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140904403) 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, 6404735 + ... + 6404756.

It is an arithmetic number, because the mean of its divisors is an integer number (38428476).

Almost surely, 2^140904401 is an apocalyptic number.

140904401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140904401 is a deficient number, since it is larger than the sum of its proper divisors (12809503).

140904401 is a wasteful number, since it uses less digits than its factorization.

140904401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12809502.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 140904401 is about 11870.3159604115. The cubic root of 140904401 is about 520.3651294045.

The spelling of 140904401 in words is "one hundred forty million, nine hundred four thousand, four hundred one".