49490087 has 4 divisors (see below), whose sum is σ = 49511616. Its totient is φ = 49468560.

The previous prime is 49490081. The next prime is 49490123. The reversal of 49490087 is 78009494.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78009494 = 2 ⋅39004747.

It is a cyclic number.

It is not a de Polignac number, because 49490087 - 2⁴ = 49490071 is a prime.

It is a super-2 number, since 2×49490087² = 4898537422535138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49490081) 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, 6839 + ... + 12072.

It is an arithmetic number, because the mean of its divisors is an integer number (12377904).

Almost surely, 2^49490087 is an apocalyptic number.

49490087 is a deficient number, since it is larger than the sum of its proper divisors (21529).

49490087 is a wasteful number, since it uses less digits than its factorization.

49490087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21528.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 49490087 is about 7034.9191182273. The cubic root of 49490087 is about 367.1465112550.

The spelling of 49490087 in words is "forty-nine million, four hundred ninety thousand, eighty-seven".