49069890 has 48 divisors (see below), whose sum is σ = 127927800. Its totient is φ = 13049856.

The previous prime is 49069877. The next prime is 49069897. The reversal of 49069890 is 9896094.

It can be written as a sum of positive squares in 4 ways, for example, as 27531009 + 21538881 = 5247^2 + 4641^2 .

It is a super-2 number, since 2×49069890² = 4815708209224200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49069897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63426 + ... + 64194.

Almost surely, 2^49069890 is an apocalyptic number.

49069890 is an abundant number, since it is smaller than the sum of its proper divisors (78857910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49069890 is a wasteful number, since it uses less digits than its factorization.

49069890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491 (or 1488 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 49069890 is about 7004.9903640191. The cubic root of 49069890 is about 366.1044671782.

The spelling of 49069890 in words is "forty-nine million, sixty-nine thousand, eight hundred ninety".