1377434949 has 8 divisors (see below), whose sum is σ = 2003541792. Its totient is φ = 834809040.

The previous prime is 1377434941. The next prime is 1377434983. The reversal of 1377434949 is 9494347731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1377434949 - 2³ = 1377434941 is a prime.

It is a super-3 number, since 3×1377434949³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377434941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20870194 + ... + 20870259.

It is an arithmetic number, because the mean of its divisors is an integer number (250442724).

Almost surely, 2^1377434949 is an apocalyptic number.

It is an amenable number.

1377434949 is a deficient number, since it is larger than the sum of its proper divisors (626106843).

1377434949 is a wasteful number, since it uses less digits than its factorization.

1377434949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41740467.

The product of its digits is 2286144, while the sum is 51.

The square root of 1377434949 is about 37113.8107582609. The cubic root of 1377434949 is about 1112.6460555453.

The spelling of 1377434949 in words is "one billion, three hundred seventy-seven million, four hundred thirty-four thousand, nine hundred forty-nine".