1374374399 has 4 divisors (see below), whose sum is σ = 1375621536. Its totient is φ = 1373127264.

The previous prime is 1374374387. The next prime is 1374374411. The reversal of 1374374399 is 9934734731.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (1374374387) and next prime (1374374411).

It is a cyclic number.

It is not a de Polignac number, because 1374374399 - 2¹⁶ = 1374308863 is a prime.

It is a super-2 number, since 2×1374374399² = 3777809977253222402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1374374359) 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, 621914 + ... + 624119.

It is an arithmetic number, because the mean of its divisors is an integer number (343905384).

Almost surely, 2^1374374399 is an apocalyptic number.

1374374399 is a deficient number, since it is larger than the sum of its proper divisors (1247137).

1374374399 is a wasteful number, since it uses less digits than its factorization.

1374374399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247136.

The product of its digits is 1714608, while the sum is 50.

The square root of 1374374399 is about 37072.5558735839. Note that the first 3 decimals coincide. The cubic root of 1374374399 is about 1111.8213743475.

The spelling of 1374374399 in words is "one billion, three hundred seventy-four million, three hundred seventy-four thousand, three hundred ninety-nine".