3729999 has 24 divisors (see below), whose sum is σ = 6160512. Its totient is φ = 1965600.

The previous prime is 3729997. The next prime is 3730003. The reversal of 3729999 is 9999273.

It is a happy number.

It is not a de Polignac number, because 3729999 - 2¹ = 3729997 is a prime.

3729999 is a modest number, since divided by 9999 gives 372 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3729991) 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 23 ways as a sum of consecutive naturals, for example, 3024 + ... + 4074.

It is an arithmetic number, because the mean of its divisors is an integer number (256688).

Almost surely, 2^3729999 is an apocalyptic number.

3729999 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

3729999 is a deficient number, since it is larger than the sum of its proper divisors (2430513).

3729999 is a wasteful number, since it uses less digits than its factorization.

3729999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087 (or 1074 counting only the distinct ones).

The product of its digits is 275562, while the sum is 48.

The square root of 3729999 is about 1931.3205326926. The cubic root of 3729999 is about 155.0849205140.

It can be divided in two parts, 372 and 9999, that multiplied together give a triangular number (3719628 = T₂₇₂₇).

The spelling of 3729999 in words is "three million, seven hundred twenty-nine thousand, nine hundred ninety-nine".