38400037 has 8 divisors (see below), whose sum is σ = 42134904. Its totient is φ = 34776768.

The previous prime is 38400023. The next prime is 38400071. The reversal of 38400037 is 73000483.

It can be written as a sum of positive squares in 4 ways, for example, as 10246401 + 28153636 = 3201^2 + 5306^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38400037 - 2⁷ = 38399909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38399984 and 38400020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38400077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27178 + ... + 28555.

It is an arithmetic number, because the mean of its divisors is an integer number (5266863).

Almost surely, 2^38400037 is an apocalyptic number.

It is an amenable number.

38400037 is a deficient number, since it is larger than the sum of its proper divisors (3734867).

38400037 is a wasteful number, since it uses less digits than its factorization.

38400037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55799.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 38400037 is about 6196.7763393558. The cubic root of 38400037 is about 337.3731744783.

The spelling of 38400037 in words is "thirty-eight million, four hundred thousand, thirty-seven".