1400139 has 16 divisors (see below), whose sum is σ = 2234400. Its totient is φ = 861408.

The previous prime is 1400131. The next prime is 1400141. The reversal of 1400139 is 9310041.

It is not a de Polignac number, because 1400139 - 2³ = 1400131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1400131) 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, 1644 + ... + 2345.

It is an arithmetic number, because the mean of its divisors is an integer number (139650).

2^1400139 is an apocalyptic number.

1400139 is a deficient number, since it is larger than the sum of its proper divisors (834261).

1400139 is a wasteful number, since it uses less digits than its factorization.

1400139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4011 (or 4005 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1400139 is about 1183.2746933827. The cubic root of 1400139 is about 111.8725964133.

The spelling of 1400139 in words is "one million, four hundred thousand, one hundred thirty-nine".