90450037 has 4 divisors (see below), whose sum is σ = 90469120. Its totient is φ = 90430956.

The previous prime is 90449987. The next prime is 90450071. The reversal of 90450037 is 73005409.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73005409 = 811 ⋅90019.

It is a cyclic number.

It is not a de Polignac number, because 90450037 - 2²³ = 82061429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90449987 and 90450014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90450937) 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, 3628 + ... + 13930.

It is an arithmetic number, because the mean of its divisors is an integer number (22617280).

Almost surely, 2^90450037 is an apocalyptic number.

It is an amenable number.

90450037 is a deficient number, since it is larger than the sum of its proper divisors (19083).

90450037 is a wasteful number, since it uses less digits than its factorization.

90450037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19082.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 90450037 is about 9510.5224357025. The cubic root of 90450037 is about 448.8861952665.

The spelling of 90450037 in words is "ninety million, four hundred fifty thousand, thirty-seven".