1400139273 has 32 divisors (see below), whose sum is σ = 2080899072. Its totient is φ = 831585600.

The previous prime is 1400139263. The next prime is 1400139287. The reversal of 1400139273 is 3729310041.

It is not a de Polignac number, because 1400139273 - 2¹⁷ = 1400008201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1400139273.

It is not an unprimeable number, because it can be changed into a prime (1400139263) 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, 519736 + ... + 522422.

It is an arithmetic number, because the mean of its divisors is an integer number (65028096).

Almost surely, 2^1400139273 is an apocalyptic number.

1400139273 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1400139273 is a deficient number, since it is larger than the sum of its proper divisors (680759799).

1400139273 is a wasteful number, since it uses less digits than its factorization.

1400139273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3165.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 1400139273 is about 37418.4349352027. The cubic root of 1400139273 is about 1118.7260368430.

The spelling of 1400139273 in words is "one billion, four hundred million, one hundred thirty-nine thousand, two hundred seventy-three".