140904399 has 32 divisors (see below), whose sum is σ = 206184960. Its totient is φ = 85276800.

The previous prime is 140904397. The next prime is 140904403. The reversal of 140904399 is 993409041.

140904399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140904399 - 2¹ = 140904397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140904397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149269 + ... + 150209.

It is an arithmetic number, because the mean of its divisors is an integer number (6443280).

Almost surely, 2^140904399 is an apocalyptic number.

140904399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

140904399 is a deficient number, since it is larger than the sum of its proper divisors (65280561).

140904399 is a wasteful number, since it uses less digits than its factorization.

140904399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 140904399 is about 11870.3158761677. The cubic root of 140904399 is about 520.3651269425.

The spelling of 140904399 in words is "one hundred forty million, nine hundred four thousand, three hundred ninety-nine".