402677434 has 4 divisors (see below), whose sum is σ = 604016154. Its totient is φ = 201338716.

The previous prime is 402677381. The next prime is 402677449. The reversal of 402677434 is 434776204.

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

It can be written as a sum of positive squares in only one way, i.e., 308529225 + 94148209 = 17565^2 + 9703^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402677393 and 402677402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100669357 + ... + 100669360.

Almost surely, 2^402677434 is an apocalyptic number.

402677434 is a deficient number, since it is larger than the sum of its proper divisors (201338720).

402677434 is a wasteful number, since it uses less digits than its factorization.

402677434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201338719.

The product of its (nonzero) digits is 112896, while the sum is 37.

The square root of 402677434 is about 20066.8242131135. The cubic root of 402677434 is about 738.4466038474.

The spelling of 402677434 in words is "four hundred two million, six hundred seventy-seven thousand, four hundred thirty-four".