37890049 has 4 divisors (see below), whose sum is σ = 38265300. Its totient is φ = 37514800.

The previous prime is 37890019. The next prime is 37890053. The reversal of 37890049 is 94009873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94009873 = 157 ⋅598789.

It can be written as a sum of positive squares in 2 ways, for example, as 24930049 + 12960000 = 4993^2 + 3600^2 .

It is a cyclic number.

It is not a de Polignac number, because 37890049 - 2¹¹ = 37888001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 37889993 and 37890020.

It is not an unprimeable number, because it can be changed into a prime (37890019) 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, 187474 + ... + 187675.

It is an arithmetic number, because the mean of its divisors is an integer number (9566325).

Almost surely, 2^37890049 is an apocalyptic number.

It is an amenable number.

37890049 is a deficient number, since it is larger than the sum of its proper divisors (375251).

37890049 is a wasteful number, since it uses less digits than its factorization.

37890049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375250.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 37890049 is about 6155.4893387935. The cubic root of 37890049 is about 335.8729708066.

The spelling of 37890049 in words is "thirty-seven million, eight hundred ninety thousand, forty-nine".