49451986 has 16 divisors (see below), whose sum is σ = 76291488. Its totient is φ = 24026400.

The previous prime is 49451959. The next prime is 49451993. The reversal of 49451986 is 68915494.

49451986 = T₄₄₄ + T₄₄₅ + ... + T₇₂₆.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22141 + ... + 24271.

It is an arithmetic number, because the mean of its divisors is an integer number (4768218).

Almost surely, 2^49451986 is an apocalyptic number.

49451986 is a deficient number, since it is larger than the sum of its proper divisors (26839502).

49451986 is a wasteful number, since it uses less digits than its factorization.

49451986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457.

The product of its digits is 311040, while the sum is 46.

The square root of 49451986 is about 7032.2106054924. The cubic root of 49451986 is about 367.0522685394.

The spelling of 49451986 in words is "forty-nine million, four hundred fifty-one thousand, nine hundred eighty-six".