1394707749 has 16 divisors (see below), whose sum is σ = 1966126080. Its totient is φ = 876979440.

The previous prime is 1394707739. The next prime is 1394707771. The reversal of 1394707749 is 9477074931.

It is not a de Polignac number, because 1394707749 - 2⁷ = 1394707621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1394707739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40957 + ... + 66834.

It is an arithmetic number, because the mean of its divisors is an integer number (122882880).

Almost surely, 2^1394707749 is an apocalyptic number.

1394707749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1394707749 is a deficient number, since it is larger than the sum of its proper divisors (571418331).

1394707749 is a wasteful number, since it uses less digits than its factorization.

1394707749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108040.

The product of its (nonzero) digits is 1333584, while the sum is 51.

The square root of 1394707749 is about 37345.7862281677. The cubic root of 1394707749 is about 1117.2775472207.

The spelling of 1394707749 in words is "one billion, three hundred ninety-four million, seven hundred seven thousand, seven hundred forty-nine".