377921399 has 4 divisors (see below), whose sum is σ = 378025440. Its totient is φ = 377817360.

The previous prime is 377921363. The next prime is 377921431. The reversal of 377921399 is 993129773.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-377921399 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 (377921329) 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, 46367 + ... + 53904.

It is an arithmetic number, because the mean of its divisors is an integer number (94506360).

Almost surely, 2^377921399 is an apocalyptic number.

377921399 is a deficient number, since it is larger than the sum of its proper divisors (104041).

377921399 is a wasteful number, since it uses less digits than its factorization.

377921399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104040.

The product of its digits is 642978, while the sum is 50.

The square root of 377921399 is about 19440.2005905289. The cubic root of 377921399 is about 722.9925594842.

The spelling of 377921399 in words is "three hundred seventy-seven million, nine hundred twenty-one thousand, three hundred ninety-nine".