4190121399 has 4 divisors (see below), whose sum is σ = 5586828536. Its totient is φ = 2793414264.

The previous prime is 4190121371. The next prime is 4190121401. The reversal of 4190121399 is 9931210914.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4190121399 - 2¹⁵ = 4190088631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4190121599) 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, 698353564 + ... + 698353569.

It is an arithmetic number, because the mean of its divisors is an integer number (1396707134).

Almost surely, 2^4190121399 is an apocalyptic number.

4190121399 is a deficient number, since it is larger than the sum of its proper divisors (1396707137).

4190121399 is a wasteful number, since it uses less digits than its factorization.

4190121399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396707136.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 4190121399 is about 64731.1470545672. The cubic root of 4190121399 is about 1612.1626991861.

The spelling of 4190121399 in words is "four billion, one hundred ninety million, one hundred twenty-one thousand, three hundred ninety-nine".