309740401 has 4 divisors (see below), whose sum is σ = 310446400. Its totient is φ = 309034404.

The previous prime is 309740393. The next prime is 309740419. The reversal of 309740401 is 104047903.

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 a cyclic number.

It is not a de Polignac number, because 309740401 - 2³ = 309740393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 309740401.

It is not an unprimeable number, because it can be changed into a prime (309740491) 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, 352341 + ... + 353218.

It is an arithmetic number, because the mean of its divisors is an integer number (77611600).

Almost surely, 2^309740401 is an apocalyptic number.

It is an amenable number.

309740401 is a deficient number, since it is larger than the sum of its proper divisors (705999).

309740401 is an equidigital number, since it uses as much as digits as its factorization.

309740401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705998.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 309740401 is about 17599.4432014198. The cubic root of 309740401 is about 676.6009741797.

The spelling of 309740401 in words is "three hundred nine million, seven hundred forty thousand, four hundred one".