49140921 has 16 divisors (see below), whose sum is σ = 69467648. Its totient is φ = 30844800.

The previous prime is 49140913. The next prime is 49140937. The reversal of 49140921 is 12904194.

It is not a de Polignac number, because 49140921 - 2³ = 49140913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49140961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3700 + ... + 10581.

It is an arithmetic number, because the mean of its divisors is an integer number (4341728).

Almost surely, 2^49140921 is an apocalyptic number.

It is an amenable number.

49140921 is a deficient number, since it is larger than the sum of its proper divisors (20326727).

49140921 is a wasteful number, since it uses less digits than its factorization.

49140921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14352.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 49140921 is about 7010.0585589566. The cubic root of 49140921 is about 366.2810332202.

The spelling of 49140921 in words is "forty-nine million, one hundred forty thousand, nine hundred twenty-one".