372140409 has 4 divisors (see below), whose sum is σ = 496187216. Its totient is φ = 248093604.

The previous prime is 372140371. The next prime is 372140449. The reversal of 372140409 is 904041273.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 372140409 - 2⁷ = 372140281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (372140449) 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, 62023399 + ... + 62023404.

It is an arithmetic number, because the mean of its divisors is an integer number (124046804).

Almost surely, 2^372140409 is an apocalyptic number.

It is an amenable number.

372140409 is a deficient number, since it is larger than the sum of its proper divisors (124046807).

372140409 is a wasteful number, since it uses less digits than its factorization.

372140409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124046806.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 372140409 is about 19290.9411123460. The cubic root of 372140409 is about 719.2871088094.

The spelling of 372140409 in words is "three hundred seventy-two million, one hundred forty thousand, four hundred nine".