402626449 has 4 divisors (see below), whose sum is σ = 405796864. Its totient is φ = 399456036.

The previous prime is 402626429. The next prime is 402626467. The reversal of 402626449 is 944626204.

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 402626449 - 2⁵ = 402626417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402626429) 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, 1585017 + ... + 1585270.

It is an arithmetic number, because the mean of its divisors is an integer number (101449216).

Almost surely, 2^402626449 is an apocalyptic number.

It is an amenable number.

402626449 is a deficient number, since it is larger than the sum of its proper divisors (3170415).

402626449 is a wasteful number, since it uses less digits than its factorization.

402626449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3170414.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 402626449 is about 20065.5537925072. The cubic root of 402626449 is about 738.4154363950.

The spelling of 402626449 in words is "four hundred two million, six hundred twenty-six thousand, four hundred forty-nine".