1396142249 has 4 divisors (see below), whose sum is σ = 1469623440. Its totient is φ = 1322661060.

The previous prime is 1396142219. The next prime is 1396142261. The reversal of 1396142249 is 9422416931.

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 not a de Polignac number, because 1396142249 - 2¹² = 1396138153 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1396142219) 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, 36740567 + ... + 36740604.

It is an arithmetic number, because the mean of its divisors is an integer number (367405860).

Almost surely, 2^1396142249 is an apocalyptic number.

1396142249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1396142249 is a deficient number, since it is larger than the sum of its proper divisors (73481191).

1396142249 is an equidigital number, since it uses as much as digits as its factorization.

1396142249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73481190.

The product of its digits is 93312, while the sum is 41.

The square root of 1396142249 is about 37364.9869396471. The cubic root of 1396142249 is about 1117.6604674583.

The spelling of 1396142249 in words is "one billion, three hundred ninety-six million, one hundred forty-two thousand, two hundred forty-nine".